Task: Program Execution
Input (English): 0, U, 4, 4, 3, 6
Output (English): [['0', 'U', '4', '4', '3'], ['0', 'U', '4', '4', '6'], ['0', 'U', '4', '3', '6'], ['0', 'U', '4', '3', '6'], ['0', '4', '4', '3', '6'], ['U', '4', '4', '3', '6']]