[1,1,[[3,1]]]
[2,1,[[3,1]]]
[3,1,[[4,1],[1,1],[2,1]]]
[4,1,[[5,1],[6,1],[7,1],[3,1]]]
[5,1,[[6,1],[4,1],[7,1]]]
[6,1,[[7,1],[8,1],[4,1],[5,1]]]
[7,1,[[6,1],[5,1],[4,1]]]
[8,1,[[6,1]]]