Task: Program Execution
Input (English): k, C, x, P, 1, q, f
Output (English): [['k', 'C', 'x', 'P', '1', 'q'], ['k', 'C', 'x', 'P', '1', 'f'], ['k', 'C', 'x', 'P', 'q', 'f'], ['k', 'C', 'x', '1', 'q', 'f'], ['k', 'C', 'P', '1', 'q', 'f'], ['k', 'x', 'P', '1', 'q', 'f'], ['C', 'x', 'P', '1', 'q', 'f']]