double-insertion管 （823） 3

11 mins 22 secs

6 mins 12 secs

5 mins 38 secs

3 mins

4 mins 59 secs

14 mins 53 secs

5 mins 11 secs

12 mins 10 secs

12 mins 10 secs

6 mins 28 secs

15 mins 37 secs

8 mins 56 secs

12 mins 16 secs

5 mins 11 secs

5 mins 13 secs

5 mins 9 secs

12 mins 7 secs

55 mins 23 secs

22 mins 7 secs

6 mins 39 secs

27 mins 6 secs

10 mins 1 sec

4 mins 47 secs

5 mins 14 secs

32 mins 6 secs

10 mins 34 secs

29 secs