1-5
1,2,__,4,5
3
1,2,3,4,5,6,7,_,9,10
8
10,__,12,13,14,15
11
17+1=
18
_,2,3,4,5
1
1,2,3,4,5,6,7,8,_,10
9
__,11,12,13,14,15
10
15+1=
16
1,_,3,4,5
2
1,2,3,4,5,6,7,8,9,_
10
10,11,12,__,14,15
13
18+1=
19
1,2,3,_,5
4
1,2,3,4,5,6,_,8,9,10
7
10,__,12,13,14,15
11
16+1=
17
1,2,3,4,_
5
1,_,3,4,5,6,7,8,9,_
2
10
10,11,12,13,14,__
15
19+1=
20