Task: Program Execution
Input (English): 4, 7, ['j', '2551', 'U', '6633', '3781', 'z', '815', '179', '1693', '947', '7721', '3937', 'D', '1375', 'Z', '8023', '3805', 'U', '7617', '5037', 'M', '4957', 'J', 'h']
Output (English): 815, z, 3781, 6633