Task: Program Execution
Input (English): s, 6, r, 3, 5, 7, 7
Output (English): [['s', '6', 'r', '3', '5', '7'], ['s', '6', 'r', '3', '5', '7'], ['s', '6', 'r', '3', '7', '7'], ['s', '6', 'r', '5', '7', '7'], ['s', '6', '3', '5', '7', '7'], ['s', 'r', '3', '5', '7', '7'], ['6', 'r', '3', '5', '7', '7']]