a-be a-ii aaaa aaab aaae aaai aaar aaba aabb aabi aabt aaea aaib aaii aara aare aari aart aata aatt abaa abab abae abai abar abat abax abb- abba abbb abbe abbi abbr abbt abee aber abet abia abib abie abir abit abra abri abta aebi aeer aeit aer- aera aeri aeta aetr aett aetx aiai aiba aiea aiee aiet aiia aiib aiir aira aire airi airt airx aita aite aiti aitr aitt aixa aixi arab arae arai arar arat arax arba arbe arbi area aree arei aret arex aria arib arie arii arit arr- arra arre arri arrr arrt arta arte arti artr artx at-t at-x ataa atab atae atai atar atat atax atea atee atei ater atex atia atie atit atra atre atri atrx atta atte atti attr axar axat axer axi- axia axie ba-i ba-x baaa baar baat baba babb babe babi babr baer baia baib baie bair bait baix bar- bara barb bare bari barr bart barx bata bate bati batt baxi baxt bbbb bbeb bbet bear beat beba bebb bebe bebi beeb beer beet beia beir beit bera bere beri berr bert beta bete beti bett biar biat biba bibb bibe bibi bieb bier biet bira birb bire biri birr birt birx bita bite bitt bitx bixa bixi brab brae brai brat brax brea breb bree brei brer bret brex bria brie brit brix brrr btaa btex btie btrt bttb eaba eara earb eare eart eata eate eati ebba ebbr eber ebit ebix eeea eeee eera eeta eete eext eiei eier eira eire eita eitb eiti eitr er-x erat erba erbb erbe ereb erei erer eret eria erie erit erra erre erta etai etat etbr etee eter etix etra etre etta ette etti exa- exai exer exit exrx exta exte extr i-be iaaa iaai iaat iaba iaea iaia iara iare iart iata iate iati ibar ibat ibea ibet ibex ibia ibie ibra ibri ibtb ieat ieet ieie iera iere ieri ieta iett iiie iiii iiit iira iita iitr iitt irae irai irar irbe iree irer irex iri- iria irie irix irra irre irri irta irte irti itaa itai itar itat itbe itea iter itet itex itia itie itra itri itta ixia ixxi raab raat raba rabb rabe rabi raer raia raie raii rair rait raix rara rarb rare rari rata rate rati ratt raxa raxi rbbb rbbr rea- reae rear reat reba rebb rebe reeb reet reia reii reir reit rera rere reri rert reta rete reti retr rett rexx riaa riab riai riat rib- riba ribe rier riet riex riia rire riri rita rite riti ritt rixe rrat rrrr rtai rtee rtei rtex taa- taar taat taba tabb tabe tabi taer taia tair tait taix tara tarb tare tari tarr tart tata tatb tate tati tatr tatt tax- taxa taxe taxi taxt tbar tbit tbrb tbta tear teat teba teer teet teia teie teir ter- tera tere teri terr teta tete teti tetr tett tetx texa text tiaa tiab tiar tiax tiba tibi tie- tiea tiee tiei tier tiet tiit tira tirb tire tiri tirr tita tite titi titt tixt traa trab trae trai trat trax tre- trea tree trei tret trex tri- tria trib trie trit trix trra trte trtr ttab ttbb tter tttt txaa txii txtr xaar xait xara xare xate xbai xbar xbee xbra xeer xer- xera xert xexe xibe xiii xita xixi xtar xtea xtie xtra xxii xxix xxxi xxxx