-er -ey a-a a-c aaa aac aae aak aap aar aay ac- aca acc ace ack acp acr acy aea aec aee aek aep aer aey aka akc ake akk akp akr ap- apa apc ape apk app apr apy ar- ara arc are ark arp arr ary ay- aya ayc aye ayk ayp ayr c-- caa cac cae cak cap car cay cca ccc cce cck ccp ccr ce- cea cec cee cek cep cer cey cka ckc cky cpa cpc cpe cpk cpp cpr cra crc cre crk crp crr cry cya cyc cye cyk cyp cyr eaa eac eae eak eap ear ec- eca ecc ece eck ecr eea eec eee eek eep eer eey eka ekc eke ekp ekr eky ep- epa epc epe epp epr era erc ere erk erp err ery eya eyc eye eyp eyr ka- kaa kac kae kak kap kar kay kca kcc kce kck kcp kcr ke- kea kec kee kek kep ker key kkc kke kkk kkp kkr kky kpa kpc kpe kpk kpp kpr kra krc krk krp krr kry kya kyc kye kyp kyr p-p paa pac pae pak pap par pay pca pcc pce pck pcp pcr pea pec pee pek pep per pey pka pkc pke pkp pkr pky ppa ppc ppe ppk ppp ppr pra prc pre prk prp prr pry py- pya pyc pye pyk pyr ra- raa rac rae rak rap rar ray rca rcc rce rcp rcr re- rea rec ree rek rep rer rey rkc rke rkk rkp rky rpa rpc rpe rpk rpp rpr rra rrc rrk rrp rrr ry- rya ryc rye ryk ryr ryy yaa yac yae yak yap yar yay yca ycc yce ycp ycy yea yec yee yek yep yer yey yka ykk ypa yra yrc yre yrp yyc yye yyy