Task: Program Execution
Input (English): M, d, M, 4, 2, 0, 9
Output (English): [['M', 'd', 'M', '4', '2', '0'], ['M', 'd', 'M', '4', '2', '9'], ['M', 'd', 'M', '4', '0', '9'], ['M', 'd', 'M', '2', '0', '9'], ['M', 'd', '4', '2', '0', '9'], ['M', 'M', '4', '2', '0', '9'], ['d', 'M', '4', '2', '0', '9']]