Why are there many words in Wubi that can't be played? GBK and GB2312

There are many versions of Wubi input method. Some versions can only input words in GB2312 font (6763 words). Most versions of Wubi input method can be input into GBK font. Word (21003 words). So as long as you choose the five-stroke input method that supports the GBK font, the general traditional characters and the remote characters can be entered. Like the best five strokes, Sogou five strokes, the extreme five strokes, the universal five strokes, QQ five strokes, etc. all support GBK fonts! The default is GB2312 font library! Generally, the right-click property is set to GBK! Sogou Wubi fast switching --GBK character

The following figure Need for Wubi, for example: