<aside> 💡 Align in order of T > D1 > H > D2, starting from the north to south (except for some patterns).
</aside>
The caption of figure is ‘north group’-’south group’ pattern number.
cheet sheet
1-1
5-5
6-5
7-5
8-5
1-2
2-2
6-6
7-6
8-6
1-3
2-3
3-3
7-7
8-7
1-4
2-4
3-4
4-4
8-8