a-be a-ii aaaa aaab aaad aaae aaaf aaai aaba aabb aabd aabi aabt aada aade aadi aadt aaea aafa aafb aafd aaff aafi aaib aaii aata aatf aatt abaa abab abad abae abaf abai abat abb- abba abbb abbe abbi abbt abda abdi abed abee abet abff abia abib abid abie abit abta adaa adab adad adae adai adat adba adbi adda addd adde addi adea adeb adee adet adfa adia adib adie adif adit adta aeaf aebi aede aedt aeit aeta aetf aett afaa afad afat afdb afee afet affa affi afft afia afib afid afif afit afta afte aiai aiba aida aidb aide aidi aidt aiea aiee aiet aifd aiff aiia aiib aiid aita aite aitf aiti aitt at-t ataa atab atad atae atai atat atdi atdt atea ated atee atef atei atfb atfe atia atid atie atif atit atta atte atti ba-i baaa baad baaf baat baba babb babe babi bada badb badd bade badi baed baff baft baia baib baid baie bait bata bate batf bati batt bbad bbbb bbdd bbeb bbet bdii bead beaf beat beba bebb bebe bebi beda bede bedi beeb beed beef beet befa befe beff beft beia beit beta bete beti bett bfta bftt biad biaf biat biba bibb bibe bibi bida bide bidi bieb bied bief biet bifa biff bifi bita bitd bite bitt btaa btaf btdt btie bttb daab daad daae daba dabb dabt dada dade dadi daeb dafa dafe daff dafi daft daia daid daie dait data date dati datt dbit dbtt dddd ddie dead deae deaf deba debe debi debt deda dedd dede dedi deeb deed deef deet defe deff defi deft deid deie deif deit deta dete dfaf dfdt dffa dia- diab diad diaf diat diba dibb dibe dida dide didi diea dieb died dief diet dif- difa diff diii dita dite diti ditt dtaa dted eaaf eaba eada eadb eadd eadi eafb eaif eata eate eati ebba ebed ebid ebit edad edda edde eddi ede- edea edei edfa edia edie edif edit edta eede eeea eeee eefa eefe eeta eete efab efda efet effa effi efit eft- efta eid- eide eidi eied eiei eita eitb eiti etai etat etee etfa etfb etfe etta ette etti faaa faad faba fabd fabe fabi fada fadd fade fadi faeb fafa fafe faff fafi faid faie fait fata fate fatf fati fatt fdti fead feaf feat feba feda fede fedi feeb feed feet fefe feff fefi feia feid feie feit feta fete feti fett ffee ffff ffii fftf fiaa fiad fiaf fiat fiba fibe fida fide fidf fief fifa fife fiff fifi fift fiii fita fite fiti fitt ftdi ftea ftii i-be iaaa iaai iaat iaba iadb iadt iaea iafe iaff iaia iata iate iati ibad ibat ibea ibed ibet ibfi ibia ibid ibie ibtb idad idae idat idbe idda idea ided idee idef idfa idia idid idie idta ieat ieet ieie ieta ietf iett ifaa ifae ifat ifbb ifda ifid ifit ifta iida iide iied iifa iiie iiii iiit iita iitt itaa itaf itai itat itbe itea itet itfa itia itie itif itta ittf taa- taaf taat taba tabb tabe tabi tada tade tafa tafe taff tafi taft taia tait tata tatb tate tati tatt tbaf tbit tbta tddb tdff tead teat teba teda tedd tede tedi teed teef teet teff tefi teft teia teie teta tete teti tett tfae tfeb tiaa tiab tiaf tiba tibi tidd tide tie- tiea tied tiee tief tiei tiet tifa tiff tift tiit tita tite titi titt ttab ttbb ttfa ttff tttt