a_ver a_ver frio frio
a ver a ver frio frio .
a WORD_BOUNDARY β e ɾ WORD_BOUNDARY a WORD_BOUNDARY β e ɾ WORD_BOUNDARY f ɾ i o WORD_BOUNDARY f ɾ i o WORD_BOUNDARY
a WORD_BOUNDARY v e r WORD_BOUNDARY a WORD_BOUNDARY v e r WORD_BOUNDARY f r i o WORD_BOUNDARY f r i o WORD_BOUNDARY