they most certainly do
they most certain do
pro:sub qn adv v
they most certainly do !
ð eɪ WORD_BOUNDARY m oʊ s t WORD_BOUNDARY s ɜː ʔ n̩ l i WORD_BOUNDARY d uː WORD_BOUNDARY
t h e y WORD_BOUNDARY m o s t WORD_BOUNDARY c e r t a i n l y WORD_BOUNDARY d o WORD_BOUNDARY