There are 2 shapes on a 10x10 grid. Which shape is closest to the blue 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: blue square at (3, 6)
Distance from target shape to red trapezoid at (6, 7): 4
Closest shape is the red trapezoid at (6, 7) with distance 4</think>

<answer>(6, 7)</answer>