8:00,8:20,8:40,9:00.9:05,9:15,9:30,9:50,10:00,10:20,10:30,10:40,11:00,11:20,11:30,11:40,12:00,12:20,12:40,13:00,13:20,13:40,14:00,14:15,14:20,14:30
당신은 어느 그룹입니까?