There are 6 shapes on a 6x6 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 (1, 2)
Distance from target shape to green trapezoid at (5, 0): 6
Distance from target shape to yellow rectangle at (3, 3): 3
Distance from target shape to purple trapezoid at (0, 5): 4
Distance from target shape to cyan trapezoid at (2, 2): 1
Distance from target shape to brown square at (5, 3): 5
Closest shape is the cyan trapezoid at (2, 2) with distance 1</think>

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