32 · Kong patterns
Conditions
Three kongs. Three Concealed Pungs may be added if all three are concealed.
How to build it
Track the fourth copy and whether each kong is exposed or concealed. Before declaring, check concealed-pung counts and the replacement-tile winning chances.
Key tile shapes
Patterns not counted together
Two Melded Kongs · Two Concealed Kongs · Melded and Concealed Kong · Melded Kong · Concealed Kong