Task: Program Execution
Input (English): M, P, 9, y, 4, I, 9
Output (English): [['M', 'P', '9', 'y', '4', 'I'], ['M', 'P', '9', 'y', '4', '9'], ['M', 'P', '9', 'y', 'I', '9'], ['M', 'P', '9', '4', 'I', '9'], ['M', 'P', 'y', '4', 'I', '9'], ['M', '9', 'y', '4', 'I', '9'], ['P', '9', 'y', '4', 'I', '9']]