-er a-a a-c aaa aac aae aag aak aap aar aas ac- aca acc ace acg ack acp acr acs aea aec aee aeg aek aep aer aes ag- aga agc age agg agk agp agr ags aka akc ake akg akk akp akr aks ap- apa apc ape apg apk app apr aps ar- ara arc are arg ark arp arr ars as- asa asc ase asg ask asp asr ass c-- caa cac cae cag cak cap car cas cca ccc cce ccg cck ccp ccr ccs ce- cea cec cee ceg cek cep cer ces cga cgc cge cgg cgp cgr cgs cka ckc cks cpa cpc cpe cpg cpk cpp cpr cps cra crc cre crg crk crp crr crs csa csc cse csg csk csp csr css eaa eac eae eag eak eap ear eas ec- eca ecc ece ecg eck ecr ecs eea eec eee eeg eek eep eer ees ega egc ege egg egp egr egs eka ekc eke ekg ekp ekr eks ep- epa epc epe epg epp epr eps era erc ere erg erk erp err ers es- esa esc ese esg esk esp esr ess g-p gaa gac gae gag gak gap gar gas gca gcc gce gcg gck gcp gcr gcs ge- gea gec gee geg gek gep ger ges gga ggc ggg ggp ggr ggs gka gkp gks gpa gpc gpe gpg gpk gpp gpr gps gra grc gre grg grk grp grr grs gsa gsc gse gsg gsk gsp gsr gss ka- kaa kac kae kag kak kap kar kas kca kcc kce kcg kck kcp kcr kcs ke- kea kec kee keg kek kep ker kes kga kgc kgp kgs kkc kke kkk kkp kkr kks kpa kpc kpe kpk kpp kpr kps kra krc krg krk krp krr krs ksa ksc kse ksg ksk ksp ksr kss p-p paa pac pae pag pak pap par pas pca pcc pce pcg pck pcp pcr pcs pea pec pee peg pek pep per pes pga pgc pge pgg pgk pgp pgr pgs pka pkc pke pkg pkp pkr pks ppa ppc ppe ppg ppk ppp ppr pps pra prc pre prg prk prp prr prs ps- psa psc pse psg psk psp psr pss ra- raa rac rae rag rak rap rar ras rca rcc rce rcg rcp rcr rcs re- rea rec ree reg rek rep rer res rga rgc rge rgg rgk rgp rgr rgs rkc rke rkg rkk rkp rks rpa rpc rpe rpg rpk rpp rpr rps rra rrc rrg rrk rrp rrr rrs rsa rsc rse rsg rsk rsp rsr rss saa sac sae sag sak sap sar sas sca scc sce scg sck scp scr scs se- sea sec see seg sek sep ser ses sga sgc sge sgg sgk sgp sgr sgs sk- ska skc ske skg skk skp skr sks spa spc spe spg spk spp spr sps sr- sra src sre srg srk srp srr srs ss- ssa ssc sse ssg ssk ssp ssr sss

-ase a-ak aaaa aaac aaae aaap aaar aaas aaca aacc aace aack aacp aacr aacs aaea aaec aaep aaes aage aaka aake aapa aapc aaps aara aarc aare aarp aars aasa aasc aase aass acaa acac acae acag acap acar acas acca accc acce accp accs ace- acea acec acek acer aces acga acgr acgs acke acks acpa acpe acpr acps acr- acra acrc acre acrr acrs acsa acsc acse acss aeac aeap aeas aeer aega aeka aer- aera aerc aers aesc aess agac agag agap agar agas agca agcc agce agea agee agep ager ages agga agge agps agra agre agrp agsa agsg akaa akae akap akar akas akca akee akeg aker akes akka akr- akra akre aksa apac apak apap apar apas apca apcc apcr apcs apea apec apeg apep aper apes apga apke appa appc appr apps apra aprc apre aprs apsa apse apss arac arae arag arak arap arar aras arc- arca arce arcs area arec aree areg arek arep ares arga arge args arka arke arks arpa arpe arps arr- arra arrc arre arrg arrk arrr arrs ars- arsa arsc arse arsk asaa asac asae asag asak asap asar asas asc- asca ascc asce ascp ascr asea asec asee asek asep aser ases asge asgp aska aske askr asks aspa aspc aspe aspr asps asra asrc asrg asrs assa assc asse assk assp assr asss caaa caac caap caas cac- caca cacc cace cack cacr caec caer caes caga cage cagg cagr cags caka cake capa capc cape capp caps cara carc care cark carp carr cars casa casc case cask casp casr cass ccaa ccac ccag ccap ccar ccas ccca cccc cccp cccs ccee ccga ccgc ccgs ccpa ccpe ccpp ccpr ccps ccra ccrc ccre ccrg ccrp ccrs ccsa ccsg ccsp ccss ceac cear ceas cec- ceca cece cecp cecs ceec cees cege ceke cepa cepc cepe cepp cepr ceps cer- cera cerc cere cerp cers cesa cesc cese cesg cesp cesr cess cgac cgap cgas cgcc cgcg cger cges cggs cgss ckac ckck ckcs cker ckga ckpc ckpg ckpr ckrc cksa cpaa cpac cpag cpap cpas cpca cpce cpcs cpea cpep cper cpga cppa cpps cpre cprs cpsa cpsc cpsk cpsr crac crag crap crar cras crca crcc crce crcr cre- crea crec cree creg crep cres crgs crkc crkp crpc crps crsa crsp crss csaa csac csak csar csas cscc csce cscr cscs csea csec csee csep cser cska csks cspa cspc cspe csps csra csrc csrs cssa csse cssr eaca eacc eaec eaga eage eapc eapp eaps eara eare earp ears easa ease ecaa ecac ecar ecca eccc ecce eces ecgs ecka ecks ecpa ecpg ecpp ecra ecrc ecrr ecsa ecsc ecse ecsp ecss eeca eecs eeea eeee eees eega eegs eeka eeke eeks eeps eera eerc eerg eers eese eesk egaa egae egar egas egcc egcg egcr egea egec egee eger egge eggp eggs egks egpa egpe egra egre egsc egss eka- ekek