Needta and Gotta (A.J. Hoge)
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Needta and Gotta are two real English "words" you must understand. They are very common and used daily by most speakers. You may not find them in the dictionary, but they are very important for real English speaking.

Need a / Need to = /ni:Də/

(Have) got a / (Have) got to = /gɒDə/  (AmE /gɑDə/)