we couldn't afford it
we could afford it
pro:sub mod v pro:per
we couldn't afford it.
w iː WORD_BOUNDARY kʰ ʊ d ə n tʰ WORD_BOUNDARY ɐ f ɔː d WORD_BOUNDARY ɪ tʰ WORD_BOUNDARY
w e WORD_BOUNDARY c o u l d n ' t WORD_BOUNDARY a f f o r d WORD_BOUNDARY i t . WORD_BOUNDARY