Task: Program Execution
Input (English): c, 2, r, 4, 8, 0
Output (English): [['c', '2', 'r', '4', '8'], ['c', '2', 'r', '4', '0'], ['c', '2', 'r', '8', '0'], ['c', '2', '4', '8', '0'], ['c', 'r', '4', '8', '0'], ['2', 'r', '4', '8', '0']]