Task: Program Execution
Input (English): e, P, a, n, 5, q, 7
Output (English): [['e', 'P', 'a', 'n', '5', 'q'], ['e', 'P', 'a', 'n', '5', '7'], ['e', 'P', 'a', 'n', 'q', '7'], ['e', 'P', 'a', '5', 'q', '7'], ['e', 'P', 'n', '5', 'q', '7'], ['e', 'a', 'n', '5', 'q', '7'], ['P', 'a', 'n', '5', 'q', '7']]