Task: Program Execution
Input (English): k, s, 9, k, a, 5
Output (English): [['k', 's', '9', 'k', 'a'], ['k', 's', '9', 'k', '5'], ['k', 's', '9', 'a', '5'], ['k', 's', 'k', 'a', '5'], ['k', '9', 'k', 'a', '5'], ['s', '9', 'k', 'a', '5']]