Task: Program Execution
Input (English): 9, Y, 7, R, q, x, z
Output (English): [['9', 'Y', '7', 'R', 'q', 'x'], ['9', 'Y', '7', 'R', 'q', 'z'], ['9', 'Y', '7', 'R', 'x', 'z'], ['9', 'Y', '7', 'q', 'x', 'z'], ['9', 'Y', 'R', 'q', 'x', 'z'], ['9', '7', 'R', 'q', 'x', 'z'], ['Y', '7', 'R', 'q', 'x', 'z']]