15
BBRBRRRGBRBRBRB
29
8 4
8 10
6 4
10 11
11 14
5 1
11 7
3 13
8 2
6 2
15 3
13 8
1 12
15 12
15 10
7 13
1 10
8 9
1 8
3 8
4 7
1 3
5 2
5 15
12 11
5 13
10 2
6 15
3 9