Task: Program Execution
Input (English): 6, z, 6, E, w, M, b
Output (English): [['6', 'z', '6', 'E', 'w', 'M'], ['6', 'z', '6', 'E', 'w', 'b'], ['6', 'z', '6', 'E', 'M', 'b'], ['6', 'z', '6', 'w', 'M', 'b'], ['6', 'z', 'E', 'w', 'M', 'b'], ['6', '6', 'E', 'w', 'M', 'b'], ['z', '6', 'E', 'w', 'M', 'b']]