abua agua abua agua
abua agua abua agua .
a β w a WORD_BOUNDARY a ɡ w a WORD_BOUNDARY a β w a WORD_BOUNDARY a ɡ w a WORD_BOUNDARY
a b u a WORD_BOUNDARY a g u a WORD_BOUNDARY a b u a WORD_BOUNDARY a g u a WORD_BOUNDARY . WORD_BOUNDARY