There are 4 shapes on a 9x9 grid. Which shape is closest to the pink square in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: pink square at (2, 6)
Distance from target shape to yellow trapezoid at (6, 4): 6
Distance from target shape to blue trapezoid at (3, 6): 1
Distance from target shape to brown square at (4, 8): 4
Closest shape is the blue trapezoid at (3, 6) with distance 1</think>

<answer>(3, 6)</answer>