a buadá a buadá a buadá
a buadá a buadá a buadá .
a WORD_BOUNDARY β w a d a WORD_BOUNDARY a WORD_BOUNDARY β w a d a WORD_BOUNDARY a WORD_BOUNDARY β w a d a WORD_BOUNDARY
a WORD_BOUNDARY b u a d á WORD_BOUNDARY a WORD_BOUNDARY b u a d á WORD_BOUNDARY a WORD_BOUNDARY b u a d á WORD_BOUNDARY . WORD_BOUNDARY