Task: Program Execution
Input (English): e, t, 6, 3, z, 6
Output (English): [['e', 't', '6', '3', 'z'], ['e', 't', '6', '3', '6'], ['e', 't', '6', 'z', '6'], ['e', 't', '3', 'z', '6'], ['e', '6', '3', 'z', '6'], ['t', '6', '3', 'z', '6']]