四喜和
The two wind-based yakuman: shousuushii 「小四喜」 and daisuushii 「大四喜」. Both involve all four wind tiles. Shousuushii requires three groups winds, and a pair of the last wind, while daisuushii requires groups of all four. Both are worth yakuman, though daisuushii can be worth double yakuman if a ruleset allows it.
suushiihou