we've talked about this before
we talk about this before
pro:sub part prep pro:dem adv
we've talked about this before .
w iː v WORD_BOUNDARY t ɔː k t WORD_BOUNDARY ɐ b aʊ t WORD_BOUNDARY ð ɪ s WORD_BOUNDARY b ɪ f oː ɹ WORD_BOUNDARY
w e ' v e WORD_BOUNDARY t a l k e d WORD_BOUNDARY a b o u t WORD_BOUNDARY t h i s WORD_BOUNDARY b e f o r e WORD_BOUNDARY