Optional yaku

Optional yaku are additional yaku, which may be appended to the standard list according to specific house rules.

[[Renhou]] 「人和」 Closed only Varies as yakuman, mangan, 5 han, etc.	A non-dealer player wins on a discard at the first round.

Sanrenkou 「」 May be open 2 han	Three consecutive triplets.
	Agari: or

Suurenkou 「」 May be open Yakuman	Four consecutive triplets.
	Agari:

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