mamá a babaa aha
mamá a babaa
n chi bab
mamá a babaa aha .
m a m a WORD_BOUNDARY a WORD_BOUNDARY β a β a a WORD_BOUNDARY a a WORD_BOUNDARY
m a m á WORD_BOUNDARY a WORD_BOUNDARY b a b a a WORD_BOUNDARY a h a WORD_BOUNDARY . WORD_BOUNDARY