Task: Program Execution
Input (English): 6, 7, g, f, 2, R
Output (English): [['6', '7', 'g', 'f', '2'], ['6', '7', 'g', 'f', 'R'], ['6', '7', 'g', '2', 'R'], ['6', '7', 'f', '2', 'R'], ['6', 'g', 'f', '2', 'R'], ['7', 'g', 'f', '2', 'R']]