Task: Program Execution
Input (English): O, z, N, 2, D, 4
Output (English): [['O', 'z', 'N', '2', 'D'], ['O', 'z', 'N', '2', '4'], ['O', 'z', 'N', 'D', '4'], ['O', 'z', '2', 'D', '4'], ['O', 'N', '2', 'D', '4'], ['z', 'N', '2', 'D', '4']]