-er a-a a-c aaa aac aae aag aak aar aas ac- aca acc ace acg ack acr acs aea aec aee aeg aek aer aes ag- aga agc age agg agk agr ags aka akc ake akg akk akr aks ar- ara arc are arg ark arr ars as- asa asc ase asg ask asr ass c-- caa cac cae cag cak car cas cca ccc cce ccg cck ccr ccs ce- cea cec cee ceg cek cer ces cga cgc cge cgg cgr cgs cka ckc cks cra crc cre crg crk crr crs csa csc cse csg csk csr css eaa eac eae eag eak ear eas ec- eca ecc ece ecg eck ecr ecs eea eec eee eeg eek eer ees ega egc ege egg egr egs eka ekc eke ekg ekr eks era erc ere erg erk err ers es- esa esc ese esg esk esr ess gaa gac gae gag gak gar gas gca gcc gce gcg gck gcr gcs ge- gea gec gee geg gek ger ges gga ggc ggg ggr ggs gka gks gra grc gre grg grk grr grs gsa gsc gse gsg gsk gsr gss ka- kaa kac kae kag kak kar kas kca kcc kce kcg kck kcr kcs ke- kea kec kee keg kek ker kes kga kgc kgs kkc kke kkk kkr kks kra krc krg krk krr krs ksa ksc kse ksg ksk ksr kss ra- raa rac rae rag rak rar ras rca rcc rce rcg rcr rcs re- rea rec ree reg rek rer res rga rgc rge rgg rgk rgr rgs rkc rke rkg rkk rks rra rrc rrg rrk rrr rrs rsa rsc rse rsg rsk rsr rss saa sac sae sag sak sar sas sca scc sce scg sck scr scs se- sea sec see seg sek ser ses sga sgc sge sgg sgk sgr sgs sk- ska skc ske skg skk skr sks sr- sra src sre srg srk srr srs ss- ssa ssc sse ssg ssk ssr sss

-ase a-ak aaaa aaac aaae aaar aaas aaca aacc aace aack aacr aacs aaea aaec aaes aage aaka aake aara aarc aare aars aasa aasc aase aass acaa acac acae acag acar acas acca accc acce accs ace- acea acec acek acer aces acga acgr acgs acke acks acr- acra acrc acre acrr acrs acsa acsc acse acss aeac aeas aeer aega aeka aer- aera aerc aers aesc aess agac agag agar agas agca agcc agce agea agee ager ages agga agge agra agre agsa agsg akaa akae akar akas akca akee akeg aker akes akka akr- akra akre aksa arac arae arag arak arar aras arc- arca arce arcs area arec aree areg arek ares arga arge args arka arke arks arr- arra arrc arre arrg arrk arrr arrs ars- arsa arsc arse arsk asaa asac asae asag asak asar asas asc- asca ascc asce ascr asea asec asee asek aser ases asge aska aske askr asks asra asrc asrg asrs assa assc asse assk assr asss caaa caac caas cac- caca cacc cace cack cacr caec caer caes caga cage cagg cagr cags caka cake cara carc care cark carr cars casa casc case cask casr cass ccaa ccac ccag ccar ccas ccca cccc cccs ccee ccga ccgc ccgs ccra ccrc ccre ccrg ccrs ccsa ccsg ccss ceac cear ceas cec- ceca cece cecs ceec cees cege ceke cer- cera cerc cere cers cesa cesc cese cesg cesr cess cgac cgas cgcc cgcg cger cges cggs cgss ckac ckck ckcs cker ckga ckrc cksa crac crag crar cras crca crcc crce crcr cre- crea crec cree creg cres crgs crkc crsa crss csaa csac csak csar csas cscc csce cscr cscs csea csec csee cser cska csks csra csrc csrs cssa csse cssr eaca eacc eaec eaga eage eara eare ears easa ease ecaa ecac ecar ecca eccc ecce eces ecgs ecka ecks ecra ecrc ecrr ecsa ecsc ecse ecss eeca eecs eeea eeee eees eega eegs eeka eeke eeks eera eerc eerg eers eese eesk egaa egae egar egas egcc egcg egcr egea egec egee eger egge eggs egks egra egre egsc egss eka- ekek eker ekes ekgs ekka eras erca ercc erce erec erer eres erg- erga ergg ergs erke erks erra errc erre errs ersa erse esac esag esar esas esca esce escr escs esea esee esek eser eses eska eske esks esra essa esse essg gaar gaas gace gack gaea gaec gaer gaes gaga gage gagg gags gara gare garg garr gars gasa gasc gase gask gasr gass gc-c gcaa gccc gccs gcrg gcse gcss gear geas geca gece geck geek geer gees gege gegg gera gere gers gesg gesk gess gggg ggss grac grae gras grcc grce grea grec gree greg gres grrr grrs grss gsea gsse kaaa kaag kaak kaar kaas kacc kace kacs kaer kaes kag- kaga kagc kage kagg kagr kags kaka kakc kake kakk kaks kara kare karg kark karr kars kas- kasa kasc kase kask kasr kass kcaa kcac kcar kcas kcca kccc kcck kccr kcea kcec kcee kceg kcgc kcgr kcgs kckc kckk kckr kcrc kcrg kcrr kcrs kcsa kcsc kcse kcsg kcsr kcss kea- keag keak kear keas keca kecg keck kecr keek keer kees kega kege kegg kegk kegr kegs keka kekc keke keks ker- kera kerc kere kerk kerr kers kesa kesc kesk kesr kess kgac kgak kgas kgcc kgce kgcr kgec kgga kggg kggr kgks kgra kgrc kgre kgrg kgrk kgrr kgrs kgsr kkaa kkac kkag kkar kkck kkcr kkcs kkea kkeg kkgr kkkk kkrc kkre kkrk kkrr kkrs kksa kkse kksr kkss krac krae krag krak krar kras krca krcc krce krcg krcs krea krec kree krek kres krgs krka krkc krke krkk krkr krks krrc krre krrg krrk krrr krrs krsa krsc krse krsk krsr krss ksac ksak ksar ksas ksca ksce ksck kscr kscs ksea ksec ksee kseg ksek kser ksgc ksgg ksgr kska kske kskg kskk kskr ksks ksra ksrg ksrr