um wearing a helmet
um wearing a helmet.
ʌ m WORD_BOUNDARY w ɛ ɹ ɪ ŋ WORD_BOUNDARY ʌ WORD_BOUNDARY h ɛ l m ɪ t WORD_BOUNDARY
u m WORD_BOUNDARY w e a r i n g WORD_BOUNDARY a WORD_BOUNDARY h e l m e t . WORD_BOUNDARY