12:00,12:20,13:00,13:15,13:30,14:00,14:15,14:30,14:45,15:00,15:15,15:30,16:00,16:15,16:30,16:45,17:00,17:15,17:30,18:00,18:15,18:30,18:45,19:00,19:15
당신은 어느 그룹입니까?