size is 1
 no solution!


size is 2
 no solution!


size is 3
 no solution!


size is 4
 no solution!


size is 5
4 to 1
6 to 4
1 to 6
7 to 2
10 to 3
12 to 5
13 to 6
2 to 9
3 to 10
15 to 6
6 to 13
14 to 12
11 to 13

size is 6
4 to 1
6 to 4
1 to 6
7 to 2
9 to 7
10 to 3
11 to 4
2 to 7
17 to 8
7 to 9
13 to 6
3 to 10
15 to 6
19 to 17
16 to 18
21 to 19
18 to 20
20 to 9
6 to 13

size is 7
4 to 1
6 to 4
1 to 6
7 to 2
9 to 7
10 to 3
11 to 4
2 to 7
13 to 11
11 to 4
15 to 13
18 to 9
16 to 18
24 to 13
19 to 8
4 to 13
13 to 6
3 to 10
22 to 24
25 to 23
28 to 15
10 to 21
26 to 28
28 to 15
20 to 11

size is 8
4 to 1
6 to 4
1 to 6
7 to 2
9 to 7
10 to 3
11 to 4
2 to 7
13 to 11
11 to 4
15 to 13
18 to 9
16 to 18
19 to 17
21 to 19
23 to 12
25 to 23
22 to 24
26 to 13
12 to 14
14 to 5
3 to 8
4 to 13
31 to 18
13 to 24
29 to 31
32 to 30
34 to 32
36 to 21
21 to 34
35 to 33
33 to 31
30 to 32
32 to 17