Task: Program Execution
Input (English): e, 4, 7, i, 1, 8
Output (English): [['e', '4', '7', 'i', '1'], ['e', '4', '7', 'i', '8'], ['e', '4', '7', '1', '8'], ['e', '4', 'i', '1', '8'], ['e', '7', 'i', '1', '8'], ['4', '7', 'i', '1', '8']]