-er a-a a-c aaa aac aae aaf aak aar aas ac- aca acc ace acf ack acr acs aea aec aee aef aek aer aes af- afa afc afe aff afk afr afs aka akc ake akk akr aks ar- ara arc are arf ark arr ars as- asa asc ase asf ask asr ass c-- caa cac cae caf cak car cas cca ccc cce ccf cck ccr ccs ce- cea cec cee cef cek cer ces cfa cfc cfe cff cfk cfr cfs cka ckc cks cra crc cre crf crk crr crs csa csc cse csf csk csr css eaa eac eae eaf eak ear eas ec- eca ecc ece ecf eck ecr ecs eea eec eee eef eek eer ees ef- efa efc efe eff efr efs eka ekc eke ekf ekr eks era erc ere erf erk err ers es- esa esc ese esf esk esr ess faa fac fae faf fak far fas fca fcc fce fcf fck fcr fcs fea fec fee fef fek fer fes ffa ffc ffe fff ffk ffr ffs fka fkc fkf fkk fra frc fre frf frk frr frs fsa fsc fse fsf fsk fsr fss ka- kaa kac kae kaf kak kar kas kca kcc kce kck kcr kcs ke- kea kec kee kef kek ker kes kfa kfc kff kfs kkc kke kkk kkr kks kra krc krf krk krr krs ksa ksc kse ksf ksk ksr kss ra- raa rac rae raf rak rar ras rca rcc rce rcf rcr rcs re- rea rec ree ref rek rer res rfa rfc rfe rff rfk rfr rfs rkc rke rkf rkk rks rra rrc rrf rrk rrr rrs rsa rsc rse rsf rsk rsr rss saa sac sae saf sak sar sas sca scc sce scf sck scr scs se- sea sec see sef sek ser ses sfa sfc sfe sff sfk sfr sfs sk- ska skc ske skf skk skr sks sr- sra src sre srf srk srr srs ss- ssa ssc sse ssf ssk ssr sss

-ase a-ak aaaa aaac aaae aaaf aaar aaas aaca aacc aace aacf aack aacr aacs aaea aaec aaes aafa aafc aaff aaka aake aara aarc aare aars aasa aasc aase aasf aass acaa acac acae acar acas acca accc acce accf accs ace- acea acec acek acer aces acfc acfe acfs acke acks acr- acra acrc acre acrr acrs acsa acsc acse acss aeac aeaf aeas aeer aeka aer- aera aerc aers aesc aess afaa afak afar afca afcc afcs afee afek afer afes affa affc affs afka afkr afr- afra afrc afre afrs afsa afsc akaa akae akar akas akca akee aker akes akka akr- akra akre aksa arac arae araf arak arar aras arc- arca arce arcs area arec aree aref arek ares arfa arfc arff arfs arka arke arks arr- arra arrc arre arrk arrr arrs ars- arsa arsc arse arsk asaa asac asae asaf asak asar asas asc- asca ascc asce ascr asea asec asee asek aser ases asfa aska aske askr asks asra asrc asrs assa assc asse assk assr asss caaa caac caaf caas cac- caca cacc cace cack cacr caec caer caes cafa cafc cafe caff cafs caka cake cara carc care carf cark carr cars casa casc case cask casr cass ccaa ccac ccaf ccar ccas ccca cccc cccf cccs ccee ccfa ccfc ccff ccra ccrc ccre ccrf ccrs ccsa ccsf ccss ceac cear ceas cec- ceca cece cecs ceec cees cef- cefa cefc ceke cer- cera cerc cere cerf cers cesa cesc cese cesr cess cfaa cfac cfae cfar cfca cfcf cfcs cffr cfra cfre cfsa cfse ckac ckck ckcs cker ckfr ckrc cksa crac craf crar cras crca crcc crce crcr cre- crea crec cree cres crfc crfs crkc crsa crss csaa csac csak csar csas cscc csce cscf cscr cscs csea csec csee cser csfc csfr cska csks csra csrc csrs cssa csse cssr eaaf eaca eacc eaec eara eare ears easa ease ecaa ecac ecar ecca eccc ecce ecef eces ecfa ecfc ecfr ecfs ecka ecks ecra ecrc ecrf ecrr ecsa ecsc ecse ecss eeca eecs eeea eeee eees eefa eefe eeka eeke eeks eera eerc eers eese eesk efas efca efes effa effs efke efsa eka- ekek eker ekes ekfc ekka eraf eras erca ercc erce erec erer eres erfc erfs erke erks erra errc erre errs ersa erse esac esar esas esca esce escr escs esea esee esek eser eses esfs eska eske esks esra essa esse f--k faaa faac faas faca facc face fack facs faes fafa fafc fafe faff fake fara farc fare fark farr fars fasa fasc fase fass fcar fcas fcca fccf fces fcra fcsc feaf feak fear feas fece feck feek feer fees fefc fefe feff feke fera ferc fere ferk ferr fers fesa fese fess ffar ffcc ffee ffff ffrr ffsa ffss frac frae frak fras frcc frea free fres frfc frsc fsas fscc fsck fsec fsra fssa fssc fssf kaaa kaaf kaak kaar kaas kacc kace kacs kaer kaes kafa kafc kafe kaff kafr kafs kaka kakc kake kakk kaks kara kare karf kark karr kars kas- kasa kasc kase kasf kask kasr kass kcaa kcac kcar kcas kcca kccc kcck kccr kcea kcec kcee kcfa kcfc kckc kckf kckk kckr kcrc kcrr kcrs kcsa kcsc kcse kcsf kcsr kcss kea- keak kear keas keca keck kecr keef keek keer kees kefa kefc keff kefr kefs keka kekc keke keks ker- kera kerc kere kerf kerk kerr kers kesa kesc kesk kesr kess kfac kfar kfcf kfcr kfcs kfer kffa kfff kffk kfka kfra kfrc kfre kfrr kfrs kfsa kfse kfsk kfsr kkaa kkac kkar kkck kkcr kkcs kkea kkfr kkfs kkkk kkrc kkre kkrf kkrk kkrr kkrs kksa kkse kksf kksr kkss krac krae krak krar kras krca krcc krce krcs krea krec kree kref krek kres krfc krfe krff krfs krka krkc krke krkk krkr krks krrc krre krrf krrk krrr krrs krsa krsc krse