a_ver busca busca
a_ver busca
co v
a ver busca busca .
a WORD_BOUNDARY β e̞ ɾ WORD_BOUNDARY β u s k a WORD_BOUNDARY β u s k a WORD_BOUNDARY
a WORD_BOUNDARY v e r WORD_BOUNDARY b u s c a WORD_BOUNDARY b u s c a WORD_BOUNDARY . WORD_BOUNDARY