Query database for all word jyutpings, and just dump it out by character if it seems valid.

可以用作｛字=>粵拼｝嘅數據

The list does not contain character variants that the system recognizes
呢個表冇收錄系統認得嘅異體字

Data License: public domain. Credits to words.hk appreciated.
授權：公有領域。