bobo bibi baba bubu
bobo bibi baba bubu .
b oː b oː WORD_BOUNDARY b iː b iː WORD_BOUNDARY b a b aː WORD_BOUNDARY b uː b uː WORD_BOUNDARY
b o b o WORD_BOUNDARY b i b i WORD_BOUNDARY b a b a WORD_BOUNDARY b u b u WORD_BOUNDARY