-er -ey a-a a-c aaa aac aae aak aap aar aas aay ac- aca acc ace ack acp acr acs acy aea aec aee aek aep aer aes aey aka akc ake akk akp akr aks ap- apa apc ape apk app apr aps apy ar- ara arc are ark arp arr ars ary as- asa asc ase ask asp asr ass asy ay- aya ayc aye ayk ayp ayr ays c-- caa cac cae cak cap car cas cay cca ccc cce cck ccp ccr ccs ce- cea cec cee cek cep cer ces cey cka ckc cks cky cpa cpc cpe cpk cpp cpr cps cra crc cre crk crp crr crs cry csa csc cse csk csp csr css csy cya cyc cye cyk cyp cyr cys eaa eac eae eak eap ear eas ec- eca ecc ece eck ecr ecs eea eec eee eek eep eer ees eey eka ekc eke ekp ekr eks eky ep- epa epc epe epp epr eps era erc ere erk erp err ers ery es- esa esc ese esk esp esr ess esy eya eyc eye eyp eyr eys ka- kaa kac kae kak kap kar kas kay kca kcc kce kck kcp kcr kcs ke- kea kec kee kek kep ker kes key kkc kke kkk kkp kkr kks kky kpa kpc kpe kpk kpp kpr kps kra krc krk krp krr krs kry ksa ksc kse ksk ksp ksr kss kya kyc kye kyp kyr kys p-p paa pac pae pak pap par pas pay pca pcc pce pck pcp pcr pcs pea pec pee pek pep per pes pey pka pkc pke pkp pkr pks pky ppa ppc ppe ppk ppp ppr pps pra prc pre prk prp prr prs pry ps- psa psc pse psk psp psr pss psy py- pya pyc pye pyk pyr pys ra- raa rac rae rak rap rar ras ray rca rcc rce rcp rcr rcs re- rea rec ree rek rep rer res rey rkc rke rkk rkp rks rky rpa rpc rpe rpk rpp rpr rps rra rrc rrk rrp rrr rrs rsa rsc rse rsk rsp rsr rss ry- rya ryc rye ryk ryr rys ryy saa sac sae sak sap sar sas say sca scc sce sck scp scr scs se- sea sec see sek sep ser ses sey sk- ska skc ske skk skp skr sks sky spa spc spe spk spp spr sps spy sr- sra src sre srk srp srr srs sry ss- ssa ssc sse ssk ssp ssr sss sy- sya syc sye syk syp syr sys yaa yac yae yak yap yar yas yay yca ycc yce ycp ycs ycy yea yec yee yek yep yer yes yey yka ykk ypa yps yra yrc yre yrp yrs ysa ysc yse ysk ysp ysr yss ysy yyc yye yys yyy