Task: Program Execution
Input (English): 3, d, 7, 1, 4, 5
Output (English): [['3', 'd', '7', '1', '4'], ['3', 'd', '7', '1', '5'], ['3', 'd', '7', '4', '5'], ['3', 'd', '1', '4', '5'], ['3', '7', '1', '4', '5'], ['d', '7', '1', '4', '5']]