he's sucking on something
he suck on something
pro:sub part adv pro:indef
he's sucking on something ?
h iː z WORD_BOUNDARY s ʌ k ɪ ŋ WORD_BOUNDARY ɔ n WORD_BOUNDARY s ʌ m θ ɪ ŋ WORD_BOUNDARY
h e ' s WORD_BOUNDARY s u c k i n g WORD_BOUNDARY o n WORD_BOUNDARY s o m e t h i n g WORD_BOUNDARY