some of them did
some of them do
pro:indef prep pro:obj v
some of them did .
s ʌ m WORD_BOUNDARY ʌ v WORD_BOUNDARY ð ɛ m WORD_BOUNDARY d ɪ d WORD_BOUNDARY
s o m e WORD_BOUNDARY o f WORD_BOUNDARY t h e m WORD_BOUNDARY d i d WORD_BOUNDARY