a-be a-ii a-iv aaaa aaab aaae aaai aaar aaav aaba aabb aabi aabt aaea aaev aaib aaii aara aare aari aart aata aatt aava abaa abab abae abai abar abat abb- abba abbb abbe abbi abbr abbt abee aber abet abia abib abie abir abit abra abri abta abva aebi aeer aeit aer- aera aeri aeta aetr aett aeva aiai aiba aiea aiee aiet aiia aiib aiir aira aire airi airt aita aite aiti aitr aitt aiva arab arae arai arar arat arba arbe arbi area aree arei aret arev aria arib arie arii arit arr- arra arre arri arrr arrt arta arte arti artr artv arva arve arvi at-t ataa atab atae atai atar atat atea atee atei ater atia atie atit atra atre atri atta atte atti attr atvi avab avar avat avea aver avia avie avit aviv avra avre avri avva ba-i baaa baar baat baba babb babe babi babr baer baia baib baie bair bait bar- bara barb bare bari barr bart bata bate bati batt bava bave bavi bbbb bbeb bbet bear beat beav beba bebb bebe bebi beeb beer beet beia beir beit bera bere beri berr bert beta bete beti bett betv biar biat biba bibb bibe bibi bieb bier biet bira birb bire biri birr birt bita bite bitt bive bivi brab brae brai brat brav brea breb bree brei brer bret brev bria brie brit brrr brvi btaa btie btrt bttb btvi eaba eara earb eare eart eata eate eati eave ebba ebbr eber ebit eeea eeee eera eeta eete eeva eiei eier eira eire eita eitb eiti eitr erat erba erbb erbe ereb erei erer eret erev eria erie erit erra erre erta erve ervi etai etat etbr etee eter etra etre etta ette etti evae evar evat evea ever evet evia evie evir evra evre i-be iaaa iaai iaat iaba iaea iaia iara iare iart iata iate iati iava ibar ibat ibea ibet ibia ibie ibra ibri ibtb ieat ieet ieie iera iere ieri ieta iett ietv ieva iiie iiii iiit iira iita iitr iitt irae irai irar irbe iree irer iri- iria irie irra irre irri irta irte irti itaa itai itar itat itbe itea iter itet itia itie itra itri itta ivai ivar ivbv ivea iver ivie ivre raab raat raba rabb rabe rabi raer raia raie raii rair rait rara rarb rare rari rata rate rati ratt rava rave ravi rbbb rbbr rea- reae rear reat reba rebb rebe reeb reet reev reia reii reir reit rera rere reri rert reta rete reti retr rett reva reve revi riaa riab riai riat rib- riba ribe rier riet riia rire riri rita rite riti ritt riva rive rrat rrrr rtai rtee rtei rtva rtve rtvi rver taa- taar taat taba tabb tabe tabi taer taia tair tait tara tarb tare tari tarr tart tata tatb tate tati tatr tatt tatv tava tave tavi tbar tbit tbrb tbta tbvi tear teat teba teer teet teev teia teie teir ter- tera tere teri terr teta tete teti tetr tett teva tiaa tiab tiar tiba tibi tie- tiea tiee tiei tier tiet tiit tira tirb tire tiri tirr tita tite titi titt tiva tivi traa trab trae trai trat trav tre- trea tree trei tret trev tri- tria trib trie trit trra trte trtr ttab ttbb tter tttt tver tvri tvrr tvtv vaar vaat vaia vaie vair vait vara vare vari varr vart vata vate vati vatt vava vear veat veba veer veet veia veie veii veir veit ver- vera verb vere veri vert veta vete veti vetr veve vevi viae viar vibe vier viet viii vira virb vire viri virr virt vita vite viti vitt viva vive vivi vrai vrav vrba vret vria vt-i vver vvvv