thirty to forty minutes
thirty to forty minute
det:num prep det:num n
thirty to forty minutes .
θ ɜː ɾ i WORD_BOUNDARY t ə WORD_BOUNDARY f ɔː ɹ ɾ i WORD_BOUNDARY m ɪ n ɪ t s WORD_BOUNDARY
t h i r t y WORD_BOUNDARY t o WORD_BOUNDARY f o r t y WORD_BOUNDARY m i n u t e s WORD_BOUNDARY