Every set is a run.
All four sets are runs of three in the same suit. An honour pair as the eyes is fine, and so is a single-tile wait. Do not import the restrictions the Japanese game puts on its equivalent.
One faan, and it stacks with everything except All Pungs, which is its opposite.
Play Mahjong Winds
Every win shows its faan line by line, using the table on this page.
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