Task: Program Execution
Input (English): 2, 3, ['X', '4287', 'x', 'i', '2837', '6555', 'U', '1409', '2685', 'W', '1051', '9655', '639', '4237', '2047', '5131', '7131', '695', '8573', '6565', '1281', '1439', 'U', '7937', 'U', 'v', 'W', 'D']
Output (English): 4287, 2837, 1409, 1051, 4237, 7131, 6565, U, v