-er a-a a-c aaa aac aad aae aak aao aar ac- aca acc acd ace ack aco acr ad- ada adc add ade adk ado adr aea aec aed aee aek aeo aer aka akc akd ake akk ako akr aoa aoc aod aoe aok aoo aor ar- ara arc ard are ark aro arr c-- caa cac cad cae cak cao car cca ccc ccd cce cck cco ccr cda cdc cdd cde cdk cdo cdr ce- cea cec ced cee cek ceo cer cka ckc ckd cko co- coa coc cod coe cok coo cor cra crc crd cre crk cro crr daa dac dad dae dak dao dar dca dcc dcd dce dck dco dcr dda ddc ddd dde ddk ddo ddr de- dea dec ded dee dek deo der dka dkc dke dkk dko dkr doa doc dod doe dok doo dor dra drc drd dre drk dro drr eaa eac ead eae eak eao ear ec- eca ecc ecd ece eck eco ecr ed- eda edc edd ede edk edo edr eea eec eed eee eek eeo eer eka ekc ekd eke eko ekr eo- eoa eoc eod eoe eok eoo eor era erc erd ere erk ero err ka- kaa kac kad kae kak kao kar kca kcc kcd kce kck kcr kda kdc kde kdk kdo kdr ke- kea kec ked kee kek keo ker kkc kke kkk kkr koa koc kod koe kok koo kor kra krc krd krk kro krr oaa oac oad oae oak oao oar oc- oca occ ocd ock oco ocr oda odc odd ode odo odr oea oec oed oee oeo oer oka okc okd oke okk oko okr oo- ooa ooc ood ook ooo oor or- ora orc ord ore ork oro orr ra- raa rac rad rae rak rao rar rca rcc rcd rce rco rcr rda rdc rdd rde rdo rdr re- rea rec red ree rek reo rer rkc rke rkk rko roa roc rod roe rok roo ror rra rrc rrd rrk rrr

a-ak a-do a-ok aaaa aaac aaad aaae aaar aaca aacc aacd aace aack aaco aacr aada aadc aade aaea aaec aaka aake aaoe aaoo aara aarc aard aare aaro acaa acac acad acae acar acca accc accd acce acco acda acdc acde ace- acea acec aced acek acer ackd acke acoa acod acoe acor acr- acra acrc acre acro acrr adaa adac adad adae adak adao adar adcc adda addc addd adde addo addr adea adee adeo ader adoc adod adoe adok adoo ador adra adre adro aeac aede aeer aeka aer- aera aerc aerd aero akaa akae akao akar akca aked akee aker akka akko akok akr- akra akre aoca aoce aora arac arad arae arak arar arc- arca arce arco arda ardc arde ardo area arec ared aree arek areo arka arke arko aroa arod aroe aroo aror arr- arra arrc arre arrk arro arrr c-cd caaa caac cac- caca cacc cace cack caco cacr cada cadc cadd cade cado cadr caec caer caka cake caod caor cara carc card care cark caro carr ccaa ccac ccad ccar ccca cccc ccdc ccdr cced ccee ccoc ccod ccra ccrc ccre cd-e cd-r cdaa cdac cdad cdda cddr cdec cder cdre ceac cead cear cec- ceca cece ceco ceda cedd cede cedo ceec ceke ceor cer- cera cerc cerd cere cero ckac ckck ckco ckdo cker ckoa ckoc ckoo ckor ckrc ckrd coad coak coca coce cock coco coda codd code coed cok- coka coke coko cood cook cor- cora corc cord core cork coro corr crac crar crca crcc crce crcr crda crdc cre- crea crec cred cree creo crkc croc crod croe crok croo cror daad daae daar daca dace dada dade dado daer daka dake dako dara darc dard dare dark daro darr dcca dccc dcra dcrk dddd ddoc ddrc ddre deac dead deae deak dear dec- deca decc decd dece deck deco deda dedd dede dedo deed deek deer dek- deka deke deor der- dera derc dere derk dero derr dkdc doae doak doar doca doce dock doco dod- doda dodd dode dodo doea doek doer doka doke doko dood dook door dora dorc dord dore dork doro dorr draa drac drad drak drar drca drda drea dred dree drek drod drra eaca eacc eada eadd eaec eara eard eare earo ecaa ecac ecad ecao ecar ecca eccc ecce ecco ecdc eced ecka ecko eco- ecod ecra ecrc ecrr edac edad edar edca edda eddc edde eddo ede- edea eder edoc edod edra eeca eede eeea eeee eeka eeke eeoc eera eerc eero eka- ekco eked ekek eker ekka ekoa eocd eode eoka eora eore erad erca ercc erce erda erde erec ered erer erke eroc erod eroe eroo erra errc erre erro kaaa kaak kaar kacc kacd kace kaco kad- kada kadd kade kado kadr kaeo kaer kaka kakc kake kakk kako kaoa kaoc kaok kaor kara kard kare kark karo karr kcaa kcac kcad kcar kcca kccc kccd kcck kccr kcda kcdc kcdd kcdr kcea kcec kced kcee kceo kckc kckk kcko kckr kcoe kcor kcrc kcro kcrr kdaa kdac kdad kdae kdak kdao kdar kdca kdcc kdcd kdce kdco kdcr kddc kddd kddk kddr kdec kdka kdkd kdkk kdko kdkr kdoc kdoe kdok kdro kea- kead keak kear keca keck keco kecr keda kedc kedd kede kedo kedr keed keek keer keka kekc keke keko keok ker- kera kerc kere kerk kero kerr kkaa kkac kkar kkcd kkck kkco kkcr kkda kkdc kkdd kkdo kkea kked kkkk kkoa kkoo kkor kkrc kkre kkrk kkro kkrr koac koae koak koar koca kocd kock koda kode kodk kodo koea koed koka kokc koke kokk koko kokr kooc kook kooo koor kora korc kord kore kork koro korr krac krad krae krak krar krca krcc krcd krce krco krda krdc krdd krde krdo krdr krea krec kred kree krek kreo krka krkc krkd krke krkk krko krkr kroa kroc krod kroe krok kroo kror krrc