a-be a-ii aaaa aaab aaac aaad aaae aaai aaar aaba aabb aabc aabd aabi aaca aacb aacc aacd aace aaci aacr aada aadc aade aadi aaea aaec aaib aaic aaii aara aarc aard aare aari abaa abab abac abad abae abai abar abb- abba abbb abbe abbi abbr abca abcb abcc abcd abci abcr abda abdi abec abed abee aber abia abib abic abid abie abir abra abrc abri acaa acab acac acad acae acai acar acba acca accc accd acce acci acda acdb acdc acde acdi ace- acea acec aced acer aci- acia acic acid acie acir acr- acra acrc acre acri acrr adaa adab adac adad adae adai adar adba adbc adbi adcc adci adda addc addd adde addi addr adea adeb adee ader adia adib adic adie adir adra adre aeac aebi aecb aeci aede aeer aer- aera aerc aerd aeri aiai aiba aica aicc aicd aice aicr aida aidb aidc aide aidi aidr aiea aiee aiia aiib aiic aiid aiir aira aird aire airi arab arac arad arae arai arar arba arbe arbi arc- arca arce arci arda ardc arde ardi area arec ared aree arei aria arib arid arie arii arr- arra arrc arre arri arrr ba-i baaa baad baar baba babb babe babi babr bac- baca bacc bace baci bada badb badd bade badi badr baed baer baia baib baic baid baie bair bar- bara barb barc bard bare bari barr bbad bbbb bbci bbdd bbeb bbrc bcaa bcar bcbc bcca bccc bcci bcda bcde bcec bcer bcia bcie bcra bd-r bdbc bddc bdii bead bear beba bebb bebe bebi beca beci beda bede bedi beeb beed beer beia beic beir bera berc berd bere beri berr biad biar biba bibb bibe bibi bica bicc bice bici bida bide bidi bidr bieb bied bier bira birb bird bire biri birr brab brac brad brae brai brca brcb brce brda brea breb brec bred bree brei brer bria bric brid brie brrr c-cd caaa caab caac caba cabe cabi cac- caca cacc cace caci cacr cada cadc cadd cade cadi cadr caec caei caer caia caib caic caid cair cara carb carc card care cari carr cbac cbar cbbc cbca cbcc cbce cbcr cbdb cbdc cbdi cbea cbec cbee cber cbia cbid cbir cbrd cbre ccaa ccab ccac ccad ccai ccar ccba ccbc ccca cccb cccc ccci ccdc ccdi ccdr cced ccee ccic ccid ccii ccir ccra ccrc ccre ccri cd-e cd-r cdaa cdac cdad cdai cdba cdda cddb cddr cdec cder cdic cdii cdre ceac cead cear ceba cec- ceca cece ceci ceda cedd cede cedi ceeb ceec cer- cera cerc cerd cere ceri ciaa ciar ciba cibc cibe cibi cica cicc cici cicr cida cidc cide cidi cidr ciee cier ciia ciid ciii cira cirb circ cire ciri cirr crab crac crai crar crbc crca crcc crce crcr crda crdc cre- crea creb crec cred cree crei cria crib cric crie daab daad daae daar daba dabb daca dace daci dada dade dadi daeb daer daia daid daie dair dara darb darc dard dare dari darr dbar dbcc dcbc dcca dccb dccc dcci dcdb dcia dcii dcra dddd ddie ddrc ddre deac dead deae dear deba debe debi dec- deca decc decd dece deci deda dedd dede dedi deeb deed deer deid deie deir der- dera derb derc dere deri derr dia- diab diac diad diar diba dibb dibe dica dice dici dida dide didi diea dieb died dier diii dira dird dire dirr draa drab drac drad drar drba drbc drca drda drea dred dree drei drib dric drie drra eaba eaca eacc eada eadb eadd eadi eaec eara earb eard eare ebac ebba ebbc ebbr ebcc ebed eber ebic ebid ecaa ecac ecad ecai ecar ecbc ecbe ecca eccb eccc ecce ecci ecdc eced ecib ecra ecrc ecri ecrr edac edad edar edca edda eddc edde eddi ede- edea edei eder edia edie edra eeca eede eeea eeee eera eerc eica eid- eide eidi eidr eiec eied eiei eier eira eird eire erad erba erbb erbe erca ercc erce erda erde erdi ereb erec ered erei erer eria eric erie erra errc erre i-be iaaa iaac iaai iaba iaca iacc iacr iadb iadc iaea iaec iaia iara iarc iare ibac ibad ibar ibca ibea ibec ibed ibia ibid ibie ibra ibrc ibrd ibri icaa icab icac icad icai icar icbc icbd icca iccb iccc icci iccr icdc icdd icde icea icec iced icee icer icra icrc icre icrr idad idae idar idbe idca idce idcr idda idea idec ided idee ider idia idic idid idie idir idra idrc idre ieac iecc iedr ieie iera iere ieri iiac iica iicd iida iide iied iiie iiii iira iirc irac irad irae irai irar irbe irca ircc ircd irda irdc ired iree irer iri- iria iric irid irie irra irrc irre irri raab raad raba rabb rabe rabi rac- raca racc race raci rada radc radd rade radr raec raed raer raia raic raid raie raii rair rara rarb rare rari rbbb rbbr rcac rcbc rccb rccc rcdc rcde rcic rcid rcrd rdac rder rea- reac read reae rear reba rebb rebe reca recc recd rece reci recr reda redc redd rede redi redr reeb reed reia reid reii reir rera rerd rere reri riaa riab riad riai rib- riba ribe rica ricc rice rida ridc ridd ride ridi ried rier riia rire riri rrad rred rrrr