u u u baubaa uun
u u u baubaa uun .
ɯ WORD_BOUNDARY ɯ WORD_BOUNDARY ɯ WORD_BOUNDARY b a ɯ b aː WORD_BOUNDARY ɯː n WORD_BOUNDARY
u WORD_BOUNDARY u WORD_BOUNDARY u WORD_BOUNDARY b a u b a a WORD_BOUNDARY u u n WORD_BOUNDARY