Task: Program Execution
Input (English): 9, 12, ['u', '7861', '9023', 'U', '2127', '971', '2475', 'V', '6723', 'T', '8593', 'f', 'S', 'N', 'h', 'X', 'o', '553', '5587', '4401']
Output (English): 6723, T, 8593, f