a máscara a máscara
a máscara a máscara .
a WORD_BOUNDARY m a s k a ɾ a WORD_BOUNDARY a WORD_BOUNDARY m a s k a ɾ a WORD_BOUNDARY
a WORD_BOUNDARY m á s c a r a WORD_BOUNDARY a WORD_BOUNDARY m á s c a r a WORD_BOUNDARY . WORD_BOUNDARY