1,1,08:00-08:50 2,2,09:00-09:50 3,3,10:10-11:00 4,4,11:10-12:00 5,N,12:20-13:10 6,5,13:20-14:10 7,6,14:20-15:10 8,7,15:30-16:20 9,8,16:30-17:20 10,9,17:30-18:20 11,A,19:00-19:50 12,B,20:00-20:50 13,C,21:00-21:50