Task: Program Execution
Input (English): N, 2, q, C, 6, z, u
Output (English): [['N', '2', 'q', 'C', '6', 'z'], ['N', '2', 'q', 'C', '6', 'u'], ['N', '2', 'q', 'C', 'z', 'u'], ['N', '2', 'q', '6', 'z', 'u'], ['N', '2', 'C', '6', 'z', 'u'], ['N', 'q', 'C', '6', 'z', 'u'], ['2', 'q', 'C', '6', 'z', 'u']]