-er a-a a-c aaa aac aae aaf aak aap aar aas ac- aca acc ace acf ack acp acr acs aea aec aee aef aek aep aer aes af- afa afc afe aff afk afp afr afs aka akc ake akk akp akr aks ap- apa apc ape apf apk app apr aps ar- ara arc are arf ark arp arr ars as- asa asc ase asf ask asp asr ass c-- caa cac cae caf cak cap car cas cca ccc cce ccf cck ccp ccr ccs ce- cea cec cee cef cek cep cer ces cfa cfc cfe cff cfk cfp cfr cfs cka ckc cks cpa cpc cpe cpf cpk cpp cpr cps cra crc cre crf crk crp crr crs csa csc cse csf csk csp csr css eaa eac eae eaf eak eap ear eas ec- eca ecc ece ecf eck ecr ecs eea eec eee eef eek eep eer ees ef- efa efc efe eff efp efr efs eka ekc eke ekf ekp ekr eks ep- epa epc epe epf epp epr eps era erc ere erf erk erp err ers es- esa esc ese esf esk esp esr ess faa fac fae faf fak fap far fas fca fcc fce fcf fck fcp fcr fcs fea fec fee fef fek fep fer fes ffa ffc ffe fff ffk ffp ffr ffs fka fkc fkf fkk fkp fpa fpc fpe fpk fpp fpr fps fra frc fre frf frk frp frr frs fsa fsc fse fsf fsk fsp fsr fss ka- kaa kac kae kaf kak kap kar kas kca kcc kce kck kcp kcr kcs ke- kea kec kee kef kek kep ker kes kfa kfc kff kfs kkc kke kkk kkp kkr kks kpa kpc kpe kpf kpk kpp kpr kps kra krc krf krk krp krr krs ksa ksc kse ksf ksk ksp ksr kss p-p paa pac pae paf pak pap par pas pca pcc pce pcf pck pcp pcr pcs pea pec pee pef pek pep per pes pfa pfc pfe pff pfk pfp pfr pfs pka pkc pke pkf pkp pkr pks ppa ppc ppe ppf ppk ppp ppr pps pra prc pre prf prk prp prr prs ps- psa psc pse psf psk psp psr pss ra- raa rac rae raf rak rap rar ras rca rcc rce rcf rcp rcr rcs re- rea rec ree ref rek rep rer res rfa rfc rfe rff rfk rfp rfr rfs rkc rke rkf rkk rkp rks rpa rpc rpe rpf rpk rpp rpr rps rra rrc rrf rrk rrp rrr rrs rsa rsc rse rsf rsk rsp rsr rss saa sac sae saf sak sap sar sas sca scc sce scf sck scp scr scs se- sea sec see sef sek sep ser ses sfa sfc sfe sff sfk sfp sfr sfs sk- ska skc ske skf skk skp skr sks spa spc spe spf spk spp spr sps sr- sra src sre srf srk srp srr srs ss- ssa ssc sse ssf ssk ssp ssr sss

-ase a-ak aaaa aaac aaae aaaf aaap aaar aaas aaca aacc aace aacf aack aacp aacr aacs aaea aaec aaep aaes aafa aafc aaff aaka aake aapa aapc aaps aara aarc aare aarp aars aasa aasc aase aasf aass acaa acac acae acap acar acas acca accc acce accf accp accs ace- acea acec acek acer aces acfc acfe acfs acke acks acpa acpe acpr acps acr- acra acrc acre acrr acrs acsa acsc acse acss aeac aeaf aeap aeas aeer aeka aer- aera aerc aers aesc aess afaa afak afap afar afca afcc afcs afee afek afer afes affa affc affs afka afkr afpa afpc afpe afr- afra afrc afre afrs afsa afsc afsp akaa akae akap akar akas akca akee aker akes akka akr- akra akre aksa apac apak apap apar apas apca apcc apcr apcs apea apec apep aper apes apfa apfc apke appa appc appr apps apra aprc apre aprs apsa apse apss arac arae araf arak arap arar aras arc- arca arce arcs area arec aree aref arek arep ares arfa arfc arff arfs arka arke arks arpa arpe arps arr- arra arrc arre arrk arrr arrs ars- arsa arsc arse arsk asaa asac asae asaf asak asap asar asas asc- asca ascc asce ascp ascr asea asec asee asek asep aser ases asfa aska aske askr asks aspa aspc aspe aspr asps asra asrc asrs assa assc asse assk assp assr asss caaa caac caaf caap caas cac- caca cacc cace cack cacr caec caer caes cafa cafc cafe caff cafs caka cake capa capc cape capp caps cara carc care carf cark carp carr cars casa casc case cask casp casr cass ccaa ccac ccaf ccap ccar ccas ccca cccc cccf cccp cccs ccee ccfa ccfc ccff ccpa ccpe ccpp ccpr ccps ccra ccrc ccre ccrf ccrp ccrs ccsa ccsf ccsp ccss ceac cear ceas cec- ceca cece cecp cecs ceec cees cef- cefa cefc ceke cepa cepc cepe cepp cepr ceps cer- cera cerc cere cerf cerp cers cesa cesc cese cesp cesr cess cfaa cfac cfae cfar cfca cfcf cfcs cffr cfpa cfpr cfps cfra cfre cfrp cfsa cfse ckac ckck ckcs cker ckfr ckpc ckpr ckrc cksa cpaa cpac cpaf cpap cpas cpca cpce cpcs cpea cpep cper cpff cppa cpps cpre cprs cpsa cpsc cpsk cpsr crac craf crap crar cras crca crcc crce crcr cre- crea crec cree crep cres crfc crfs crkc crkp crpc crps crsa crsp crss csaa csac csak csar csas cscc csce cscf cscr cscs csea csec csee csep cser csfc csfr cska csks cspa cspc cspe csps csra csrc csrs cssa csse cssr eaaf eaca eacc eaec eapc eapp eaps eara eare earp ears easa ease ecaa ecac ecar ecca eccc ecce ecef eces ecfa ecfc ecfr ecfs ecka ecks ecpa ecpp ecra ecrc ecrf ecrr ecsa ecsc ecse ecsp ecss eeca eecs eeea eeee eees eefa eefe eeka eeke eeks eeps eera eerc