Task: Program Execution
Input (English): b, d, 1, 4, A, 9
Output (English): [['b', 'd', '1', '4', 'A'], ['b', 'd', '1', '4', '9'], ['b', 'd', '1', 'A', '9'], ['b', 'd', '4', 'A', '9'], ['b', '1', '4', 'A', '9'], ['d', '1', '4', 'A', '9']]