Very difficult

1 min 12 secs

58 secs

33 secs

41 secs

5 mins 37 secs

52 secs

44 secs

24 secs

56 secs

5 mins 40 secs

2 mins 35 secs

1 min 44 secs

2 mins 46 secs

2 mins 31 secs

1 min 56 secs

1 min 53 secs

3 mins 26 secs

1 min 50 secs

1 min 38 secs

4 mins 18 secs

1 min 17 secs

1 min 29 secs

52 secs

1 min 59 secs

30 secs

29 secs

2 mins 29 secs

4 mins 14 secs

3 mins 16 secs

1 min 4 secs

1 min 24 secs

1 min 3 secs

3 mins 20 secs

2 mins 46 secs

18 mins 25 secs

38 secs

10 mins 6 secs

53 secs

1 min 45 secs

31 secs