Participant 1
Initial description: To fill in the boxes to match the input image.
Final description: The rule is to fill in the patterns in the input box for the output.
Participant 2
Initial description: fill in the area around orange blocks to be a square or rectangle with yellow
Final description: fill in the area around orange blocks to be a square or rectangle with yellow
Participant 3
Initial description: It seems the full patterns are filled in with the yellow squares
Final description: It seems the full patterns are filled in with the yellow squares
Participant 4
Initial description: Adding yellow to the block holes in the input of the lighter color red.
Final description: The uneven blocks of the lighter red you fill in with the yellow color to make it an even block.