Task: Program Execution
Input (English): Y, 0, 2, 1, f, 5
Output (English): [['Y', '0', '2', '1', 'f'], ['Y', '0', '2', '1', '5'], ['Y', '0', '2', 'f', '5'], ['Y', '0', '1', 'f', '5'], ['Y', '2', '1', 'f', '5'], ['0', '2', '1', 'f', '5']]