Task: Program Execution
Input (English): 8, p, t, 4, o, 9
Output (English): [['8', 'p', 't', '4', 'o'], ['8', 'p', 't', '4', '9'], ['8', 'p', 't', 'o', '9'], ['8', 'p', '4', 'o', '9'], ['8', 't', '4', 'o', '9'], ['p', 't', '4', 'o', '9']]