Task: Program Execution
Input (English): p, 4, 1, o, 4, n
Output (English): [['p', '4', '1', 'o', '4'], ['p', '4', '1', 'o', 'n'], ['p', '4', '1', '4', 'n'], ['p', '4', 'o', '4', 'n'], ['p', '1', 'o', '4', 'n'], ['4', '1', 'o', '4', 'n']]