Task: Program Execution
Input (English): z, v, e, 5, 4, Z
Output (English): [['z', 'v', 'e', '5', '4'], ['z', 'v', 'e', '5', 'Z'], ['z', 'v', 'e', '4', 'Z'], ['z', 'v', '5', '4', 'Z'], ['z', 'e', '5', '4', 'Z'], ['v', 'e', '5', '4', 'Z']]