Teachers and students beat each other

9 mins 29 secs

12 mins 51 secs

12 mins 7 secs

18 mins 4 secs

8 mins 21 secs

7 mins 54 secs

14 mins 26 secs

13 mins 24 secs

11 mins 47 secs

3 mins 23 secs

53 secs

20 mins 10 secs

6 mins 15 secs

2 mins 51 secs

51 secs

10 secs

6 mins 59 secs

1 hour 51 mins 28 secs

3 mins 3 secs

13 mins 51 secs

10 mins 18 secs

1 min

26 secs

6 mins 25 secs

4 mins 1 sec

5 mins 35 secs

15 mins 3 secs

17 mins 16 secs

1 min 21 secs

40 mins 2 secs

2 mins 45 secs

3 mins 9 secs

11 mins 6 secs

1 min 50 secs

22 mins 49 secs

6 mins 5 secs

6 mins 10 secs

6 mins 1 sec

52 secs

2 mins 44 secs