Task: Program Execution
Input (English): x, 5, o, y, 7, 3
Output (English): [['x', '5', 'o', 'y', '7'], ['x', '5', 'o', 'y', '3'], ['x', '5', 'o', '7', '3'], ['x', '5', 'y', '7', '3'], ['x', 'o', 'y', '7', '3'], ['5', 'o', 'y', '7', '3']]