Task: Program Execution
Input (English): e, 7, n, 8, 4, 6
Output (English): [['e', '7', 'n', '8', '4'], ['e', '7', 'n', '8', '6'], ['e', '7', 'n', '4', '6'], ['e', '7', '8', '4', '6'], ['e', 'n', '8', '4', '6'], ['7', 'n', '8', '4', '6']]