what are what's back here
what are what's back here ?
w ʌ t WORD_BOUNDARY ɑː ɹ WORD_BOUNDARY w ʌ t s WORD_BOUNDARY b æ k WORD_BOUNDARY h ɪ ɹ WORD_BOUNDARY
w h a t WORD_BOUNDARY a r e WORD_BOUNDARY w h a t ' s WORD_BOUNDARY b a c k WORD_BOUNDARY h e r e WORD_BOUNDARY