you don't hafta sit
you do have sit
pro:per mod mod v
you don't hafta sit !
j uː WORD_BOUNDARY d oʊ n t WORD_BOUNDARY h æ f t ə WORD_BOUNDARY s ɪ t WORD_BOUNDARY
y o u WORD_BOUNDARY d o n ' t WORD_BOUNDARY h a f t a WORD_BOUNDARY s i t WORD_BOUNDARY