Task: Program Execution
Input (English): 12, ['9509', '1779', '2951', 'U', '3943', '2123', '4259', 'q', '4109', '8733', '1253', '401', 'u', 'q', 'U', '7867', 'U', '2763', 'r', 'z', '7581', '9165', 'z', 'm']
Output (English): u, q, U, 7867, U, 2763, r, z, 7581, 9165, z, m