Decode the Mardi Gras secret message using the alphabet code.

Let me carefully examine the image to understand the task.

The image shows a "Mardi Gras" secret message puzzle. There's an alphabet code at the top: each letter is assigned a number (A=1, B=2, ..., Z=26). Below that, there are several rows of numbers, and the student needs to convert those numbers back to letters using the code to reveal a secret message.

I need to decode the numbers using the given alphabet code:
- A = 1, B = 2, C = 3, D = 4, E = 5, F = 6, G = 7, H = 8, I = 9, J = 10, K = 11, L = 12, M = 13, N = 14, O = 15, P = 16, Q = 17, R = 18, S = 19, T = 20, U = 21, V = 22, W = 23, X = 24, Y = 25, Z = 26

Now let me decode each row of numbers:

First row: 13, 11, 10, 4, 9
- 13 = M
- 11 = K
- 10 = J
- 4 = D
- 9 = I
So: MKJDI? That doesn't make sense. Let me check again.

Wait, maybe I should look more carefully at the layout. Let me zoom in on the number sequences to make sure I'm reading them correctly.