Task: Program Execution
Input (English): 4, a, L, 5, 3, r
Output (English): [['4', 'a', 'L', '5', '3'], ['4', 'a', 'L', '5', 'r'], ['4', 'a', 'L', '3', 'r'], ['4', 'a', '5', '3', 'r'], ['4', 'L', '5', '3', 'r'], ['a', 'L', '5', '3', 'r']]