Ittsu
2 han (1 han if called)#1-2-3, 4-5-6 and 7-8-9 in one suit.
Example
1 Characters2 Characters3 Characters4 Characters5 Characters6 Characters7 Characters8 Characters2 Dots3 Dots4 Dots5 Bamboo5 Bamboo
Win9 Characters
Counted by the scoring program:
- Pinfu1 han · Japanese mahjong yaku
- Ittsu2 han · Japanese mahjong yaku
- Total3 han, 30 fu · Japanese mahjong yaku
Counterexample
1 Characters2 Characters3 Characters4 Characters5 Characters6 Characters2 Dots3 Dots4 Dots7 Dots8 Dots5 Bamboo5 Bamboo
Win9 Dots
The 7-8-9 is in dots, a different suit, so it doesn't count.