There are 2 shapes on a 8x8 grid. Which shape is closest to the red 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: red square at (2, 4)
Distance from target shape to pink trapezoid at (1, 6): 3
Closest shape is the pink trapezoid at (1, 6) with distance 3</think>

<answer>(1, 6)</answer>