b. first time first time

6 mins 43 secs

46 mins

11 mins 32 secs

3 mins 25 secs

34 mins 52 secs

14 mins 23 secs

17 mins 31 secs

37 mins 16 secs

15 mins 25 secs

11 mins 56 secs

28 mins 47 secs

31 mins 7 secs

1 hour 42 mins 27 secs

4 mins 8 secs

3 mins 17 secs

42 mins 1 sec

10 mins 24 secs

20 mins 20 secs

19 mins 14 secs

12 mins 18 secs

25 mins 36 secs

12 mins 8 secs

10 mins 22 secs

12 mins 1 sec

20 mins 44 secs

32 mins 31 secs

15 mins 57 secs

41 mins 9 secs

47 secs

8 mins 17 secs

8 mins 39 secs

19 mins 52 secs

29 secs

5 mins 2 secs

6 mins 35 secs

8 mins 16 secs

6 mins 41 secs

7 mins 2 secs

1 min 27 secs

1 hour 22 mins 9 secs