Task: Program Execution
Input (English): 2, 4, ['397', '853', 'Z', '3067', '8939', 'E', '4007', '3321', '233', '6937', '6015', 'n', 'r', 'Q', 'N', '545', '7873', 'R', '5433', 'Q', 'n', '5771', 'l', '2329', 'W']
Output (English): 853, E, 6937, Q, R, 5771