213..
.6...
.4...
.5...
.....
213..
.5...
.6...
.4...
.....
156..
.2...
.4...
.3...
.....
243..
.5...
.1...
.6...
.....
253..
.1...
.6...
.4...
.....
4 5
3
2
1 5
1 4