Task: Program Execution
Input (English): z, 0, 6, 9, R, 0
Output (English): [['z', '0', '6', '9', 'R'], ['z', '0', '6', '9', '0'], ['z', '0', '6', 'R', '0'], ['z', '0', '9', 'R', '0'], ['z', '6', '9', 'R', '0'], ['0', '6', '9', 'R', '0']]