color coded mah jongg tilesMaryland‑suburban‑washington‑d.c.‑area‑community‑club‑planners‑in‑Frederick‑schedule‑monthly‑mahjong‑potluck‑gatherings‑where‑every‑participating‑guest‑brings‑one‑prepared‑food‑dish‑to‑share‑and‑group‑members‑rotate‑responsibility‑for‑bringing‑along‑the‑communal‑shared‑mahjong‑tile‑game‑set‑to‑each‑new‑scheduled‑event‑venue‑location‑through‑each‑full‑calendar‑year‑cycle‑period.