Russian alphabet chart showing print and cursive handwriting styles for each letter.

The image you provided is a chart comparing the print (block) and cursive forms of the Russian alphabet. The task appears to involve filling in the missing cursive forms for each letter. Below, I will explain how to solve this problem step by step.

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Step 1: Understand the Structure

The chart is divided into three columns:
1. Print (Block): The standard uppercase and lowercase print forms of the Russian letters.
2. Cursive: The corresponding uppercase and lowercase cursive forms of the Russian letters.
3. Print (Block): Repeated for consistency.

The goal is to fill in the missing cursive forms in the second column.

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Step 2: Identify Missing Cursive Forms

From the image, the following cursive forms are missing:
- Ъ (Hard Sign)
- Ы (Yeru)
- Ь (Soft Sign)

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Step 3: Write the Missing Cursive Forms

Here are the correct cursive forms for the missing letters:

1. Ъ (Hard Sign):
- Uppercase: Not typically used in cursive.
- Lowercase: A small, curved form resembling a backward "c" with a tail. It looks like: ъ.

2. Ы (Yeru):
- Uppercase: A tall, narrow form resembling a vertical line with a small loop at the top. It looks like: Ы.
- Lowercase: A small, rounded form with a tail. It looks like: ы.

3. Ь (Soft Sign):
- Uppercase: Not typically used in cursive.
- Lowercase: A small, curved form resembling a backward "c". It looks like: ь.

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Step 4: Fill in the Chart

Using the information above, the completed chart should look like this for the missing letters:

| Print | Cursive |
|-------|---------|
| Ъ | |
| | ъ |
| Ы | Ы |
| | ы |
| Ь | |
| | ь |

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Final Answer

The missing cursive forms are:
- Ъ: Lowercase = ъ
- Ы: Uppercase = Ы, Lowercase = ы
- Ь: Lowercase = ь

Thus, the completed chart is:

| Print | Cursive |
|-------|---------|
| Ъ | |
| | ъ |
| Ы | Ы |
| | ы |
| Ь | |
| | ь |

Final Answer:
\boxed{ъ, Ы, ы, ь}