bau bau bau bau
bau bau bau bau
on on on on
bau bau bau bau .
b a ʊ WORD_BOUNDARY b a ʊ WORD_BOUNDARY b a ʊ WORD_BOUNDARY b a ʊ WORD_BOUNDARY
b a u WORD_BOUNDARY b a u WORD_BOUNDARY b a u WORD_BOUNDARY b a u WORD_BOUNDARY