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### Step 3: Identify the Squares in the Pattern
Let’s count the distinct squares by examining the lines:
1. Outermost square: The 4x4 grid suggests a 4x4 square (side length 4).
2. Central 2x2 square: In the center, there’s a 2x2 square (side length 2), possibly indicated by the diamond shape. The diamond might be a stylistic choice, but the bounding lines suggest a 2x2 square.
3. Smaller squares: The remaining regions include 1x1 squares (unit squares) and possibly some 2x2 squares around the central one.
Let’s list the regions by examining the grid:
- The 4x4 grid is divided by lines at x = 1, 2, 3 and y = 1, 2, 3 (assuming the grid starts at (0,0)).
- The central 2x2 square spans from (1,1) to (3,3).
- This leaves regions around the center, such as:
- 1x1 squares at the corners: (0,0), (0,3), (3,0), (3,3).
- 2x1 or 1x2 rectangles along the edges: e.g., (0,1) to (0,2), (1,0) to (2,0), etc.
