Task: Program Execution
Input (English): 9, y, 7, 8, R, 8, b
Output (English): [['9', 'y', '7', '8', 'R', '8'], ['9', 'y', '7', '8', 'R', 'b'], ['9', 'y', '7', '8', '8', 'b'], ['9', 'y', '7', 'R', '8', 'b'], ['9', 'y', '8', 'R', '8', 'b'], ['9', '7', '8', 'R', '8', 'b'], ['y', '7', '8', 'R', '8', 'b']]