Task: Program Execution
Input (English): 1, 5, ['O', '8261', 'U', '6755', 'b', '201', '8067', '3159', '947', 'K', '4251', 'U', 'b', '195', 'R', '4001', 'B', '127']
Output (English): O, 201, 4251, 4001