06:00부터,30,07:00,30,50,08:00,3009;00,30,10:00,10,20,4011:00,10,30,50,12시,20,30,50,1시,10,20,40,2시,20,40,3시,20,40,4시,20,40, 5시이후부턴는30분단위
당신은 어느 그룹입니까?