Wanka vs Wanta - What's the difference?

As a noun wanka

is {{cx|lang=en|British English}} eye dialect of lang=en.

eye dialect of want to|lang=en.

(en noun)

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* wanna

(en-cont)

1937 , , Their Eyes Were Watching God , Harper Perennial (2000), page 163:

“We don’t wanta . Come on aid us. It might be night time when de water hem you up in heah. Dat’s how come Ah won’t stay. Come on, man.”