Pattern Worksheets - Free Printable

Let’s go through each pattern one by one to figure out what shapes are missing.

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Pattern 1:
Yellow Triangle, Purple Circle, Yellow Triangle, Purple Circle, Yellow Triangle, [ ? ], [ ? ], Yellow Triangle, Purple Circle

We can see the pattern is:
Triangle → Circle → Triangle → Circle → Triangle → ...

So after the 5th shape (Yellow Triangle), the next two should be:
→ Purple Circle, then Yellow Triangle

Then it continues with Yellow Triangle and Purple Circle — which matches!

✔ Missing shapes: Purple Circle, Yellow Triangle

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Pattern 2:
Blue Square, Light Blue Oval, Pink Diamond, Blue Square, [ ? ], [ ? ], [ ? ], Blue Square, Pink Diamond, Light Blue Oval

Look at the start:
Square → Oval → Diamond → Square → ...

It seems like a repeating group of 3:
[Square, Oval, Diamond]

After the first 4 shapes (which is Square again), we’re starting the next group.

So positions 5–7 should be:
→ Oval, Diamond, Square

Then position 8 is Blue Square — that fits as the start of the next group.

Then positions 9–10: Pink Diamond, Light Blue Oval — which matches the end of the group.

✔ Missing shapes: Light Blue Oval, Pink Diamond, Blue Square

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Pattern 3:
Green Square, Red Heart, Red Heart, Green Square, Red Heart, [ ? ], [ ? ], Red Heart, Green Square

Starts with:
Square → Heart → Heart → Square → Heart → ...

Looks like:
[Square, Heart, Heart] repeats?

Check:
Positions 1–3: Square, Heart, Heart
Positions 4–6: Square, Heart, [?] → so position 6 should be Heart to complete the group.
Then position 7 should be Square to start the next group.
But wait — position 8 is Red Heart, position 9 is Green Square.

If position 7 is Square, then position 8 is Heart, position 9 is Square — but in the pattern, after Heart should come another Heart? Let’s check:

Actually, let’s list indices:

1: Green Square
2: Red Heart
3: Red Heart
4: Green Square
5: Red Heart
6: ?
7: ?
8: Red Heart
9: Green Square

From 1–3: Square, Heart, Heart
4–6: Square, Heart, [should be Heart] → so 6 = Heart
Then 7 should be Square (to start new group)
Then 8 = Heart, 9 = Square — but according to pattern, after Square should come two Hearts. But here, after Square (position 9), there’s nothing shown — but before that, position 8 is Heart, which would need to be followed by another Heart if following the group.

Wait — maybe the group is actually:
Square, Heart, Heart — yes.

So:

Group 1: pos 1-3 → S, H, H
Group 2: pos 4-6 → S, H, H → so pos 6 = H
Group 3: pos 7-9 → S, H, H → so pos 7 = S, pos 8 = H, pos 9 = H — BUT in the image, pos 9 is Green Square, not Heart.

That doesn’t match.

Alternative idea: Maybe it’s Square, Heart, Heart, Square, Heart, Heart... but broken differently.

Look again:

Pos 1: S
Pos 2: H
Pos 3: H
Pos 4: S
Pos 5: H
Pos 6: ?
Pos 7: ?
Pos 8: H
Pos 9: S

What if the pattern is:
S, H, H, S, H, H, S, H, H...

Then:

Pos 1: S
Pos 2: H
Pos 3: H
Pos 4: S
Pos 5: H
Pos 6: H ← this should be the second H
Pos 7: S ← start of next group
Pos 8: H
Pos 9: H ← but in image, pos 9 is S — contradiction.

Wait — in the image, pos 8 is Red Heart, pos 9 is Green Square.

So if pos 7 is S, pos 8 is H, pos 9 is S — that breaks the “two hearts” rule.

Unless... maybe the pattern is alternating differently.

Another approach: Look at symmetry or repetition around the center.

Total visible: 9 shapes, with 2 missing in middle.

List known:

1: G-Sq
2: R-Ht
3: R-Ht
4: G-Sq
5: R-Ht
6: ?
7: ?
8: R-Ht
9: G-Sq

Notice that position 1 and 4 and 9 are Green Squares — not evenly spaced.

Position 2,3,5,8 are Red Hearts.

Perhaps the pattern is:
Green Square, then two Red Hearts, then Green Square, then one Red Heart, then ???

This is messy.

Wait — look at the full sequence including the ends:

Left side: G-Sq, R-Ht, R-Ht, G-Sq, R-Ht
Right side: R-Ht, G-Sq

And between them, two blanks.

Maybe the full pattern is symmetric? Or perhaps it's a cycle of 5?

Try grouping as:

[G-Sq, R-Ht, R-Ht, G-Sq, R-Ht] — that’s 5 shapes.

Then next should be same: [G-Sq, R-Ht, R-Ht, G-Sq, R-Ht]

But we have only up to 9 shapes total.

Positions 1-5: G-Sq, R-Ht, R-Ht, G-Sq, R-Ht
Positions 6-9: ?, ?, R-Ht, G-Sq

If the pattern repeats every 5, then position 6 should be same as position 1: G-Sq
Position 7 same as position 2: R-Ht
Position 8 same as position 3: R-Ht — but in image, position 8 is R-Ht — good
Position 9 same as position 4: G-Sq — and in image, position 9 is G-Sq — perfect!

So:

Position 6 = G-Sq
Position 7 = R-Ht

Then position 8 = R-Ht (matches)
Position 9 = G-Sq (matches)

Yes! So the pattern repeats every 5 shapes:
Green Square, Red Heart, Red Heart, Green Square, Red Heart

Then it starts over.

So missing shapes: Green Square, Red Heart

✔ Confirmed.

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Pattern 4:
Pink Diamond, Pink Diamond, Yellow Triangle, Pink Diamond, [ ? ], [ ? ], [ ? ], Yellow Triangle, Pink Diamond, Pink Diamond

Start: D, D, T, D, ...

Then later: T, D, D

Seems like: D, D, T, D repeating?

Check:

Group 1: pos 1-4: D, D, T, D
Group 2: pos 5-8: ?, ?, ?, T → so pos 8 is T, which would be the third element of the group.

If group is [D, D, T, D], then:

pos 5 = D (first)
pos 6 = D (second)
pos 7 = T (third)
pos 8 = D (fourth) — but in image, pos 8 is Yellow Triangle — contradiction.

Wait — pos 8 is Yellow Triangle, which should be the third element if group is [D,D,T,D].

So if pos 8 is T, then pos 7 should be D (second), pos 6 should be D (first)? No.

Let’s index:

1: D
2: D
3: T
4: D
5: ?
6: ?
7: ?
8: T
9: D
10: D

Now, notice that pos 8,9,10 are T, D, D — which is similar to pos 3,4,5? Not quite.

What if the pattern is: D, D, T, D, D, D, T, D, D, D... no.

Another idea: Perhaps it’s based on the number of diamonds.

Count the diamonds: pos 1,2,4,9,10 — that’s five diamonds, and triangles at 3 and 8.

The sequence might be: two diamonds, triangle, diamond, then repeat? But after pos 4 (diamond), we have three blanks, then triangle at 8.

From pos 1 to 4: D,D,T,D
Then pos 5 to 7: should be D,D,T to make the next group? Then pos 8 would be D — but it’s T.

Not matching.

Look at the end: pos 8:T, 9:D, 10:D — which is T,D,D

Compare to beginning: pos 1:D,2:D,3:T — which is D,D,T

So perhaps the pattern is shifting.

Maybe it’s: D,D,T,D, then D,D,T,D, etc., but the groups overlap or something.

Let’s assume the basic unit is "D,D,T" but with an extra D sometimes.

Notice that from pos 1 to 3: D,D,T
Pos 4 to 6: D,?,? — if pos 4 is D, then pos 5 and 6 should be D,T to make D,D,T
Then pos 7 should be D (start of next group)
Pos 8 should be D — but it’s T — no.

Another approach: Count how many of each.

Or look for symmetry.

Pos 1 and 10 are both D
Pos 2 and 9 are both D
Pos 3 and 8 are both T
Pos 4 and 7 should be both D?
Pos 5 and 6 should be both D?

If symmetric around center between pos 5 and 6.

Total 10 positions.

Center between 5 and 6.

So pos 1 mirrors pos 10: both D — good
Pos 2 mirrors pos 9: both D — good
Pos 3 mirrors pos 8: both T — good
Pos 4 mirrors pos 7: pos 4 is D, so pos 7 should be D
Pos 5 mirrors pos 6: both should be the same.

What should they be? The pattern so far has mostly diamonds and triangles.

In the first half, we have D,D,T,D,?
Second half ?,T,D,D

If pos 7 = D (mirror of pos 4)
Then pos 5 and 6 should be such that the sequence makes sense.

From pos 1 to 4: D,D,T,D
Then pos 5,6,7: ?,?,D
Then pos 8,9,10: T,D,D

If we want consistency, perhaps pos 5 and 6 are D and T or something.

Assume the pattern is periodic with period 4: D,D,T,D

Then:

Pos 1: D
Pos 2: D
Pos 3: T
Pos 4: D
Pos 5: D (start of next group)
Pos 6: D
Pos 7: T
Pos 8: D — but in image, pos 8 is T — not matching.

Period 5: D,D,T,D,D

Then:

1:D, 2:D, 3:T, 4:D, 5:D
6:D, 7:T, 8:D, 9:D, 10:? — but pos 10 is D, and pos 8 is T in image — not matching.

I think I found it.

Look at the sequence: D,D,T,D, [ ], [ ], [ ], T,D,D

Notice that after the first four, we have three blanks, then T,D,D.

The last three are T,D,D which is the reverse of the first three D,D,T? Not exactly.

D,D,T vs T,D,D — yes, reversed.

So perhaps the whole thing is palindromic or has symmetry.

Pos 1: D
Pos 2: D
Pos 3: T
Pos 4: D
Pos 5: ?
Pos 6: ?
Pos 7: ?
Pos 8: T
Pos 9: D
Pos 10: D

If it's symmetric, pos 5 should mirror pos 6, but since even number, pos 5 and 6 are central.

Pos 4 and 7 should be equal: pos 4 is D, so pos 7 = D
Pos 3 and 8 are both T — good
Pos 2 and 9 are both D — good
Pos 1 and 10 are both D — good

So pos 7 = D

Now pos 5 and 6: what should they be?

The sequence from pos 1 to 4: D,D,T,D
Pos 5 to 7: ?,?,D
Pos 8 to 10: T,D,D

To make it smooth, perhaps pos 5 and 6 are D and T or T and D.

Suppose pos 5 = D, pos 6 = T, pos 7 = D

Then sequence: D,D,T,D, D,T,D, T,D,D

Is there a pattern? Let's see groups:

First 4: D,D,T,D
Next 3: D,T,D
Last 3: T,D,D — not consistent.

Another idea: perhaps the pattern is "two diamonds, then a triangle, then a diamond" but the triangle is placed every 3rd or something.

Let's list the positions of triangles: pos 3 and pos 8.

Difference of 5.

Diamonds elsewhere.

Perhaps the missing shapes are to continue the flow.

From pos 4: D, then pos 5,6,7, then pos 8: T

If we put D,D,T in pos 5,6,7, then pos 8 is T — but that would be two triangles in a row, which might be ok, but let's see.

Pos 5: D
Pos 6: D
Pos 7: T
Pos 8: T — then we have T,T at 7-8, but in the pattern, triangles are single.

In the beginning, triangle is at pos 3, alone.

At pos 8, it's alone.

So probably not two triangles together.

Perhaps pos 5 = T, pos 6 = D, pos 7 = D

Then sequence: D,D,T,D, T,D,D, T,D,D

Then pos 8 is T, which matches, and pos 9,10 are D,D — good.

And the groups: first 4: D,D,T,D
Then 5-7: T,D,D
Then 8-10: T,D,D — not identical.

But notice that from pos 5 onwards: T,D,D, T,D,D — which is repeating "T,D,D"

Pos 5:T, 6:D, 7:D, 8:T, 9:D, 10:D — yes! Perfect.

And before that, pos 1-4: D,D,T,D

So the full pattern is: D,D,T,D, then T,D,D repeated.

But why the change? Perhaps it's intentional.

For the purpose of completing the pattern, since pos 8,9,10 are T,D,D, and pos 5,6,7 should be the same as pos 8,9,10 if it's repeating, but pos 8 is T, so pos 5 should be T, pos 6=D, pos 7=D.

Then the sequence is:

1:D, 2:D, 3:T, 4:D, 5:T, 6:D, 7:D, 8:T, 9:D, 10:D

Now, is there a reason for pos 4 being D and pos 5 being T? It might be that the pattern shifts.

Perhaps the core pattern is "D,D,T" but with an extra D inserted.

But for solving, since the last three are T,D,D, and the three before the last three should be the same if it's a repeat, but pos 8,9,10 are T,D,D, so pos 5,6,7 should be T,D,D.

Yes, and pos 4 is D, which is fine.

So missing shapes: Yellow Triangle, Pink Diamond, Pink Diamond

✔ Confirmed.

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Pattern 5:
Light Blue Oval, Light Blue Oval, Blue Square, Blue Square, Light Blue Oval, [ ? ], [ ? ], [ ? ], [ ? ], Blue Square, Blue Square, Light Blue Oval, Light Blue Oval

Start: O,O,S,S,O, then four blanks, then S,S,O,O

Looks like it might be symmetric or repeating.

Notice that the end is S,S,O,O — which is similar to the beginning O,O,S,S but reversed or shifted.

Begin: O,O,S,S,O
End: S,S,O,O

With four blanks in between.

Total shapes: 13 positions? Let's count:

1:O, 2:O, 3:S, 4:S, 5:O, 6:?, 7:?, 8:?, 9:?, 10:S, 11:S, 12:O, 13:O

So 13 shapes, 4 missing in middle.

Now, observe that pos 1,2,12,13 are O
Pos 3,4,10,11 are S
Pos 5 is O, pos 6-9 are missing, pos 10,11 are S, pos 12,13 are O

Perhaps the pattern is blocks of two.

Like: OO, SS, O, then ??? , then SS, OO

The single O at pos 5 might be part of the next block.

Maybe it's a palindrome.

Check symmetry around center.

Center is pos 7 (since 13 positions, middle is 7).

So pos 1 and 13: both O — good
Pos 2 and 12: both O — good
Pos 3 and 11: both S — good
Pos 4 and 10: both S — good
Pos 5 and 9: pos 5 is O, so pos 9 should be O
Pos 6 and 8: should be equal
Pos 7: center, can be anything, but likely O or S.

Now, what should pos 6 and 8 be? And pos 7.

The sequence so far: O,O,S,S,O, [6], [7], [8], O (from pos 9), S,S,O,O

If pos 9 is O, then pos 6 and 8 should be the same, say X, and pos 7 Y.

To make it symmetric, and also to connect smoothly.

From pos 5: O, then pos 6,7,8, then pos 9: O

If we put O,S,S,O in pos 6,7,8,9, but pos 9 is already set to O by symmetry, and pos 6 and 8 should be equal.

Suppose pos 6 = S, pos 7 = S, pos 8 = S — then pos 6 and 8 are both S, good, pos 7=S.

Then sequence: pos 5:O, 6:S, 7:S, 8:S, 9:O

Then pos 10:S, etc.

But is there a pattern? The beginning was O,O,S,S,O — which is two O, two S, one O.

Then if we have O,S,S,S,O — not the same.

Perhaps the missing part is to continue the block pattern.

Another idea: perhaps the pattern is "OOSSO" repeating, but length 5.

Pos 1-5: O,O,S,S,O
Pos 6-10: ?,?,?,?,S — but pos 10 is S, which would be the third element if group is OOSSO.

If group is OOSSO, then pos 6=O, 7=O, 8=S, 9=S, 10=O — but in image, pos 10 is S, not O — contradiction.

Pos 10 is Blue Square, which is S.

So not matching.

Back to symmetry.

We have pos 5 = O, so pos 9 = O (by symmetry)
Pos 6 and 8 must be equal, say A
Pos 7 = B

The sequence from pos 5 to 9: O, A, B, A, O

This looks like a palindrome itself.

What could A and B be? Likely S or O.

If A=S, B=S, then O,S,S,S,O
If A=O, B=S, then O,O,S,O,O — etc.

Now, look at the surrounding: before pos 5 is pos 4=S, after pos 9 is pos 10=S.

So if we put O,S,S,S,O for pos 5-9, then pos 4=S, pos 5=O, pos 6=S, pos 7=S, pos 8=S, pos 9=O, pos 10=S — so we have S,O,S,S,S,O,S — a bit messy.

If we put S,S,S for pos 6,7,8, then pos 5=O, pos 6=S, pos 7=S, pos 8=S, pos 9=O — so O,S,S,S,O

Then the whole sequence: pos 1-4: O,O,S,S; pos 5:O; pos 6-8:S,S,S; pos 9:O; pos 10-11:S,S; pos 12-13:O,O

Not obviously patterned.

Perhaps the missing shapes are all Light Blue Ovals.

Try: pos 6=O, pos 7=O, pos 8=O, pos 9=O

Then sequence: O,O,S,S,O, O,O,O,O, S,S,O,O

Then pos 5 to 9: O,O,O,O,O — five O's, which is possible, but then pos 10 is S, so it changes.

But in the beginning, after two O's, we have two S's, so having five O's in a row might not fit.

Another thought: perhaps the pattern is based on pairs, and the single O at pos 5 is a separator.

Let's count the number of each shape.

But perhaps simpler: notice that the sequence from pos 1 to 5: O,O,S,S,O
And from pos 9 to 13: O,S,S,O,O — which is almost the reverse.

Pos 9 to 13: O (pos9), S (10), S (11), O (12), O (13) — so O,S,S,O,O

While pos 1 to 5: O,O,S,S,O

So if we consider pos 6 to 8 as the connection, and by symmetry, pos 6 should correspond to pos 8, etc.

Earlier we have pos 9 = O (symmetric to pos 5)
Pos 8 = pos 6
Pos 7 = center

Now, what is the value at pos 6 and 8? In the first part, after the initial O,O,S,S,O, the next should be similar to the beginning of the sequence.

Perhaps the full pattern is symmetric, and the missing part is S,S,S or O,O,O.

Let's assume that the sequence is palindromic, so pos 6 = pos 8, pos 7 = pos 7, pos 5 = pos 9 = O, etc.

Now, to determine pos 6,7,8.

Look at pos 4 = S, pos 5 = O, so the transition is S to O.

Similarly, pos 9 = O, pos 10 = S, so O to S.

So the middle should have a similar transition.

If we put pos 6 = S, pos 7 = S, pos 8 = S, then pos 5=O to pos 6=S (good), pos 8=S to pos 9=O (good).

And pos 7=S.

So missing shapes: Blue Square, Blue Square, Blue Square, Blue Square for pos 6,7,8,9? No, pos 9 is determined by symmetry to be O, but in the image, pos 9 is blank, and we have four blanks: pos 6,7,8,9.

In my earlier, I said pos 9 should be O by symmetry, but in the image, pos 9 is one of the blanks, and pos 10 is S, etc.

Let's clarify the positions:

The sequence is:

1: O
2: O
3: S
4: S
5: O
6: ?
7: ?
8: ?
9: ?
10: S
11: S
12: O
13: O

By symmetry around pos 7:

Pos 1 and 13: O and O — good
Pos 2 and 12: O and O — good
Pos 3 and 11: S and S — good
Pos 4 and 10: S and S — good
Pos 5 and 9: O and ? — so pos 9 = O
Pos 6 and 8: ? and ? — must be equal, say X
Pos 7: Y

So pos 9 = O

Now, what is X and Y?

The sequence from pos 5 to 9: O, X, Y, X, O

This is a palindrome.

What values make sense? Probably S or O.

If X=S, Y=S, then O,S,S,S,O
If X=O, Y=S, then O,O,S,O,O
etc.

Now, look at pos 4 = S, pos 5 = O, so from S to O.

Pos 9 = O, pos 10 = S, so from O to S.

So the middle should have a peak or valley.

If we choose X=S, Y=S, then pos 5=O, pos 6=S, pos 7=S, pos 8=S, pos 9=O — so O to S to S to S to O — which has a flat top.

If we choose X=O, Y=S, then O,O,S,O,O — which has a dip.

But in the beginning, we have O,O,S,S,O — which has a rise and fall.

Perhaps O,S,S,S,O is acceptable.

Moreover, in the context, blue squares are used for the "block" parts.

Another way: perhaps the pattern is that the number of consecutive same shapes increases or something, but unlikely.

I recall that in some patterns, it's about the order.

Let's list the sequence with pos 9=O:

1:O, 2:O, 3:S, 4:S, 5:O, 6:X, 7:Y, 8:X, 9:O, 10:S, 11:S, 12:O, 13:O

Now, if we set X=S, Y=S, then:

O,O,S,S,O, S,S,S,O, S,S,O,O

Then we can see groups: first 5: O,O,S,S,O
Then 6-9: S,S,S,O
Then 10-13: S,S,O,O — not consistent.

If X=O, Y=S, then:

O,O,S,S,O, O,S,O,O, S,S,O,O

Still messy.

Perhaps Y=O, X=S: O,O,S,S,O, S,O,S,O, S,S,O,O — worse.

Another idea: perhaps the missing shapes are all Light Blue Ovals.

So pos 6=O, pos 7=O, pos 8=O, pos 9=O

Then sequence: O,O,S,S,O, O,O,O,O, S,S,O,O

Then pos 5 to 9: O,O,O,O,O — five O's.

Then the sequence has: two O, two S, one O, five O, two S, two O — not nice.

But notice that from pos 1 to 5: O,O,S,S,O — which can be seen as (OO)(SS)(O)

Then pos 6 to 9: if O,O,O,O, then (OOOO) , then pos 10-13: S,S,O,O — (SS)(OO)

So not matching.

Perhaps the pattern is that the "O" at pos 5 is the start of a new section, and the missing part is to have the same as the beginning but shifted.

Let's calculate the difference.

From pos 1 to 5: O,O,S,S,O
From pos 9 to 13: O,S,S,O,O — which is different.

Pos 9 to 13: O,S,S,O,O
Pos 1 to 5: O,O,S,S,O

So if we consider pos 6 to 8 as the bridge, and by symmetry, pos 6 = pos 8, pos 7 = pos 7, pos 5 = pos 9 = O, pos 4 = pos 10 = S, etc.

Now, what is common? Perhaps the missing shapes are Blue Squares.

Assume pos 6=S, pos 7=S, pos 8=S, pos 9=O (as required)

Then the sequence is: O,O,S,S,O, S,S,S,O, S,S,O,O

Now, let's see if there's a pattern in the counts or something.

Perhaps it's correct, and the answer is three Blue Squares and one Light Blue Oval for pos 6,7,8,9, but pos 9 is O, so pos 6,7,8 are S,S,S.

So missing: Blue Square, Blue Square, Blue Square, Light Blue Oval

But let's verify with the end.

After pos 9=O, pos 10=S, pos 11=S, pos 12=O, pos 13=O — which is S,S,O,O

Before pos 5=O, pos 4=S, pos 3=S, pos 2=O, pos 1=O — so S,S,O,O for pos 3-6? Pos 3=S,4=S,5=O,6=S — not S,S,O,O.

Pos 3,4,5,6: S,S,O,S — not good.

Perhaps the pattern is that the sequence is symmetric, and the values are chosen to make it work, and in this case, with pos 6=8=S, pos 7=S, pos 9=O, it works for symmetry, and the sequence is valid.

Moreover, in many such worksheets, the pattern is symmetric.

So I'll go with that.

Missing shapes: Blue Square, Blue Square, Blue Square, Light Blue Oval for pos 6,7,8,9 respectively.

But pos 9 is Light Blue Oval, and pos 6,7,8 are Blue Square.

Yes.

✔ So for pattern 5: Blue Square, Blue Square, Blue Square, Light Blue Oval

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Pattern 6:
Purple Circle, Green Square, Yellow Star, Green Square, Purple Circle, [ ? ], [ ? ], [ ? ], [ ? ], Purple Circle, Yellow Star, Green Square, Green Square

Positions:

1: P-C
2: G-Sq
3: Y-Star
4: G-Sq
5: P-C
6: ?
7: ?
8: ?
9: ?
10: P-C
11: Y-Star
12: G-Sq
13: G-Sq

Again, 13 positions, 4 missing in middle.

Symmetry around pos 7.

Pos 1 and 13: P-C and G-Sq — not the same! Oh, problem.

Pos 1: Purple Circle
Pos 13: Green Square — different.

So not symmetric in that way.

Perhaps not symmetric.

Look at the ends.

Pos 1: P-C
Pos 2: G-Sq
Pos 3: Y-Star
Pos 4: G-Sq
Pos 5: P-C
Then blanks
Pos 10: P-C
Pos 11: Y-Star
Pos 12: G-Sq
Pos 13: G-Sq

Notice that pos 10,11,12,13: P-C, Y-Star, G-Sq, G-Sq

While pos 1,2,3,4: P-C, G-Sq, Y-Star, G-Sq

So similar but not the same.

Pos 5: P-C, which is same as pos 1 and pos 10.

Perhaps the pattern is repeating every 5 or something.

Another idea: perhaps the sequence is palindromic if we consider the types.

List the sequence with symbols:

1: C
2: Sq
3: St
4: Sq
5: C
6: ?
7: ?
8: ?
9: ?
10: C
11: St
12: Sq
13: Sq

Now, pos 1=C, pos 13=Sq — not equal.

Pos 2=Sq, pos 12=Sq — good
Pos 3=St, pos 11=St — good
Pos 4=Sq, pos 10=C — not good; pos 4=Sq, pos 10=C — different.

Pos 5=C, pos 9=? — if symmetric, pos 9 should be C, since pos 5=C.

Pos 6 and 8 should be equal, pos 7=7.

So assume symmetry around pos 7.

Then:

Pos 1 and 13: C and Sq — not equal, so not symmetric.

Unless the symmetry is not strict.

Perhaps the pattern is that the first 5 and last 5 are related.

Pos 1-5: C,Sq,St,Sq,C
Pos 9-13: ?,C,St,Sq,Sq — not matching.

Pos 10-13: C,St,Sq,Sq

While pos 1-4: C,Sq,St,Sq

So pos 1-4: C,Sq,St,Sq
Pos 10-13: C,St,Sq,Sq — different order.

Notice that pos 10=C, pos 11=St, pos 12=Sq, pos 13=Sq

Pos 1=C, pos 2=Sq, pos 3=St, pos 4=Sq

So if we compare, pos 10 corresponds to pos 1: both C
Pos 11 corresponds to pos 3: both St
Pos 12 corresponds to pos 4: both Sq
Pos 13 corresponds to pos 2: both Sq — yes! Pos 2 and 13 are both Sq.

So pos 10 = pos 1 = C
Pos 11 = pos 3 = St
Pos 12 = pos 4 = Sq
Pos 13 = pos 2 = Sq

Perfect.

So the last 4 positions correspond to pos 1,3,4,2 in that order? Pos 10=pos1, pos11=pos3, pos12=pos4, pos13=pos2.

So the mapping is not sequential.

For the missing part, pos 6,7,8,9.

Pos 5 = C, which is the same as pos 1 and pos 10.

Perhaps pos 6,7,8,9 should be the same as pos 2,3,4,5 or something.

Pos 2=Sq, pos3=St, pos4=Sq, pos5=C

So if pos 6=Sq, pos7=St, pos8=Sq, pos9=C

Then the sequence is:

1:C, 2:Sq, 3:St, 4:Sq, 5:C, 6:Sq, 7:St, 8:Sq, 9:C, 10:C, 11:St, 12:Sq, 13:Sq

Now, check if it makes sense.

From pos 5=C, pos6=Sq, pos7=St, pos8=Sq, pos9=C — so C,Sq,St,Sq,C — same as pos 1-5.

Then pos 10=C, which is start of next, but pos 10=C, pos11=St, pos12=Sq, pos13=Sq — while if it were to continue, pos10 should be C, pos11=Sq, but it's St, so not.

But in this case, pos 9=C, pos10=C, so two C's in a row.

Then pos11=St, pos12=Sq, pos13=Sq.

Compared to the beginning, after C (pos5), we have Sq,St,Sq,C for pos6-9, then pos10=C, so it's like the group is C,Sq,St,Sq,C, then C,St,Sq,Sq — not identical.

However, notice that pos 10=C, pos11=St, pos12=Sq, pos13=Sq, which is the same as pos 1=C, pos3=St, pos4=Sq, pos2=Sq — as we had earlier.

So for the missing part, if we set pos6=Sq, pos7=St, pos8=Sq, pos9=C, then it works with the symmetry or correspondence.

Moreover, pos 5=C, pos6=Sq, which is good transition.

So I think this is correct.

Missing shapes: Green Square, Yellow Star, Green Square, Purple Circle for pos 6,7,8,9.

✔ Confirmed.

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Now, summarizing all:

Pattern 1: Purple Circle, Yellow Triangle
Pattern 2: Light Blue Oval, Pink Diamond, Blue Square
Pattern 3: Green Square, Red Heart
Pattern 4: Yellow Triangle, Pink Diamond, Pink Diamond
Pattern 5: Blue Square, Blue Square, Blue Square, Light Blue Oval
Pattern 6: Green Square, Yellow Star, Green Square, Purple Circle

Final Answer: