so his birthday began
so his begin
adv det:poss v
so his birthday began .
s oʊ WORD_BOUNDARY h ɪ z WORD_BOUNDARY b ɜː θ d eɪ WORD_BOUNDARY b ɪ ɡ æ n WORD_BOUNDARY
s o WORD_BOUNDARY h i s WORD_BOUNDARY b i r t h d a y WORD_BOUNDARY b e g a n WORD_BOUNDARY