Task: Program Execution
Input (English): 2, 9, 3, P, M, 0, U
Output (English): [['2', '9', '3', 'P', 'M', '0'], ['2', '9', '3', 'P', 'M', 'U'], ['2', '9', '3', 'P', '0', 'U'], ['2', '9', '3', 'M', '0', 'U'], ['2', '9', 'P', 'M', '0', 'U'], ['2', '3', 'P', 'M', '0', 'U'], ['9', '3', 'P', 'M', '0', 'U']]