2 yes
1
3 no
2
4 yes
3
3 yes
4
3 no
5
2 no
6
4 yes
7
4 no
8
5 no
9
10 yes
10 11
10 no
12 13
10 no
14 15 16
2 yes
17
3 yes
18
5 yes
19
5 no
20 21
10 no
22 23 24
2 yes
25
3 yes
26
5 no
27 28
5 no
29 30
