a ver espera a ver
a ver espera a ver .
a WORD_BOUNDARY β e ɾ WORD_BOUNDARY e s p e ɾ a WORD_BOUNDARY a WORD_BOUNDARY β e ɾ WORD_BOUNDARY
a WORD_BOUNDARY v e r WORD_BOUNDARY e s p e r a WORD_BOUNDARY a WORD_BOUNDARY v e r WORD_BOUNDARY