A---------------------------------------------------------------------------B
|\ /|
| \ / |
| H------G------------------F-----------------E------------------D------C |
| | | | | | | |
| | | | | | | |
| | | K--------L--------M | | |
| | | / | \ | | |
| | I----------------J | N----------------O | |
| | | \ | / | | |
| | | R--------Q--------P | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| S------T U-----------------V W-----MM |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | NN-------OO--------PP | | |
| | | / | \ | | |
| | X----------------Y | Z---------------AA | |
| | | \ | / | | |
| | | DD-------CC-------BB | | |
| | | | | | | |
| | | | | | | |
| EE-----FF----------------GG------------------HH---------------II-----JJ |
| / \ |
|/ \|
KK---------------------------------------------------------------------------LL
A partial HC is LL JJ II HH GG DD CC BB Z PP OO NN Y X FF EE KK A H S T I G F K J R
U V P Q L M E D O W MM C B
Orphans are N which connects to M, O & P; and AA which connects to W, Z & II
A---------------------------------------------------------------------------B
|\ /|
| \ / |
| H---1--G---------2--------F--------3--------E---------1--------D---2--C |
| | | | | | | |
| | | 1 2 3 | |
| | | K--------L--------M | | | | | | / | \ | | |
| | 3 3 | 3 | | |
| | I-------1--------J 3 N--------2-------O | |
| | | 2 | 1 | | |
| | | R----1---Q----2---P | | |
| | 2 | | 1 | |
| | | 3 3 | | |
| | | | | | | |
| S------T U--------1--------V W-----MM |
| | | | | | | |
| | | 2 2 | | |
| | | | | | | |
| | | NN---3---OO-----1--PP | | |
| | | / | \ | | |
| | X----------------Y | Z---------------AA | |
| | | \ | / | | |
| | | DD-------CC-------BB | | |
| | | | | | | |
| | | | | | | |
| EE-----FF----------------GG------------------HH---------------II-----JJ |
| / \ |
|/ \|
KK---------------------------------------------------------------------------LL