he couldn't go out
he could go out
pro:sub mod v adv
he couldn't go out.
h iː WORD_BOUNDARY k ʊ d ə n t WORD_BOUNDARY ɡ oʊ WORD_BOUNDARY aʊ t WORD_BOUNDARY
h e WORD_BOUNDARY c o u l d n ' t WORD_BOUNDARY g o WORD_BOUNDARY o u t . WORD_BOUNDARY