Task: Program Execution
Input (English): 2, S, Z, f, 2
Output (English): [['2', 'S', 'Z', 'f'], ['2', 'S', 'Z', '2'], ['2', 'S', 'f', '2'], ['2', 'Z', 'f', '2'], ['S', 'Z', 'f', '2']]