Task: Program Execution
Input (English): r, A, 2, 6, 1, n
Output (English): [['r', 'A', '2', '6', '1'], ['r', 'A', '2', '6', 'n'], ['r', 'A', '2', '1', 'n'], ['r', 'A', '6', '1', 'n'], ['r', '2', '6', '1', 'n'], ['A', '2', '6', '1', 'n']]