Task: Program Execution
Input (English): 1, 6, ['F', 'u', '5731', '2493', 'n', '711', 'L', 'Z', '7919', 'U', '3329', '8737', 'I', 'J', 'M', '7507', 'U', 'B', 'b', '4297', '7451', 'C', 't', 'E']
Output (English): F, L, I, b