Task: Program Execution
Input (English): 2, 7, ['5617', 'R', '507', '9375', '6905', '5523', 'M', '6279', 'e', '5173', '8135', 'T', 'b', 'o', 'm', '8051']
Output (English): M, 5523, 6905, 9375, 507, R