Task: Program Execution
Input (English): z, R, l, 8, 7, 4
Output (English): [['z', 'R', 'l', '8', '7'], ['z', 'R', 'l', '8', '4'], ['z', 'R', 'l', '7', '4'], ['z', 'R', '8', '7', '4'], ['z', 'l', '8', '7', '4'], ['R', 'l', '8', '7', '4']]