There are 2 shapes on a 6x6 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 (2, 2)
Distance from target shape to pink rectangle at (2, 1): 1
Closest shape is the pink rectangle at (2, 1) with distance 1</think>

<answer>(2, 1)</answer>