Task: Program Execution
Input (English): 19, 21, ['Z', '197', '8449', '687', '2279', '8037', 'Q', 'u', '4421', '9823', 'm', '7257', '3857', 'c', '3419', '3065', 'A', 'Z', 'Z', '1113', 'h', 'F', 'Q']
Output (English): Z1113h