Demonstration

4 mins 28 secs

28 secs

3 mins 15 secs

1 min 45 secs

12 mins 42 secs

1 min 6 secs

2 mins 59 secs

1 min 8 secs

8 mins

2 mins 47 secs

47 secs

30 secs

2 mins 35 secs

28 secs

2 mins 29 secs

47 secs

34 secs

16 secs

2 mins 2 secs

54 secs

5 mins 33 secs

13 secs

3 mins 6 secs

32 secs

54 secs

1 min 33 secs

19 secs

17 secs

1 min 23 secs

17 secs

2 mins 46 secs

5 mins 7 secs

48 secs

1 min 24 secs

2 mins 11 secs

5 mins 38 secs

1 min

48 secs

2 mins 37 secs

5 mins 35 secs