Task: Program Execution
Input (English): 8, 1, R, 3, v, a
Output (English): [['8', '1', 'R', '3', 'v'], ['8', '1', 'R', '3', 'a'], ['8', '1', 'R', 'v', 'a'], ['8', '1', '3', 'v', 'a'], ['8', 'R', '3', 'v', 'a'], ['1', 'R', '3', 'v', 'a']]