a-be a-ii a-iv aaaa aaab aaae aaai aaar aaav aaba aabb aabi aaea aaev aaib aaii aara aare aari aava abaa abab abae abai abar abb- abba abbb abbe abbi abbr abee aber abia abib abie abir abra abri abva aebi aeer aer- aera aeri aeva aiai aiba aiea aiee aiia aiib aiir aira aire airi aiva arab arae arai arar arba arbe arbi area aree arei arev aria arib arie arii arr- arra arre arri arrr arva arve arvi avab avar avea aver avia avie aviv avra avre avri avva ba-i baaa baar baba babb babe babi babr baer baia baib baie bair bar- bara barb bare bari barr bava bave bavi bbbb bbeb bear beav beba bebb bebe bebi beeb beer beia beir bera bere beri berr biar biba bibb bibe bibi bieb bier bira birb bire biri birr bive bivi brab brae brai brav brea breb bree brei brer brev bria brie brrr brvi eaba eara earb eare eave ebba ebbr eber eeea eeee eera eeva eiei eier eira eire erba erbb erbe ereb erei erer erev eria erie erra erre erve ervi evae evar evea ever evia evie evir evra evre i-be iaaa iaai iaba iaea iaia iara iare iava ibar ibea ibia ibie ibra ibri ieie iera iere ieri ieva iiie iiii iira irae irai irar irbe iree irer iri- iria irie irra irre irri ivai ivar ivbv ivea iver ivie ivre raab raba rabb rabe rabi raer raia raie raii rair rara rarb rare rari rava rave ravi rbbb rbbr rea- reae rear reba rebb rebe reeb reev reia reii reir rera rere reri reva reve revi riaa riab riai rib- riba ribe rier riia rire riri riva rive rrrr rver vaar vaia vaie vair vara vare vari varr vava vear veba veer veia veie veii veir ver- vera verb vere veri veve vevi viae viar vibe vier viii vira virb vire viri virr viva vive vivi vrai vrav vrba vria vver vvvv