There are 2 shapes on a 7x7 grid. Which shape is closest to the blue rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: blue rectangle at (1, 6)
Distance from target shape to red square at (0, 6): 1
Closest shape is the red square at (0, 6) with distance 1</think>

<answer>(0, 6)</answer>