let's look back again
let look back again
v v adv adv
let's look back again .
l ɛ t s WORD_BOUNDARY l ʊ k WORD_BOUNDARY b æ k WORD_BOUNDARY ɐ ɡ ɛ n WORD_BOUNDARY
l e t ' s WORD_BOUNDARY l o o k WORD_BOUNDARY b a c k WORD_BOUNDARY a g a i n WORD_BOUNDARY