-er -ey -up c-- ccc cce cck ccp ccr ccu ce- cec cee cek cep cer ceu cey ckc cky cpc cpe cpk cpp cpr cpu crc cre crk crp crr cru cry cuc cue cuk cup cur cuu cuy cyc cye cyk cyp cyr ec- ecc ece eck ecr ecu eec eee eek eep eer eey ekc eke ekp ekr eku eky ep- epc epe epp epr epu erc ere erk erp err eru ery eu- euc eue eup eur eyc eye eyp eyr kcc kce kck kcp kcr kcu ke- kec kee kek kep ker key kkc kke kkk kkp kkr kku kky kpc kpe kpk kpp kpr kpu krc krk krp krr kru kry kuc kue kuk kup kur kuu kuy kyc kye kyp kyr kyu p-p pcc pce pck pcp pcr pcu pec pee pek pep per peu pey pkc pke pkp pkr pku pky ppc ppe ppk ppp ppr ppu prc pre prk prp prr pru pry puc pue puk pup pur puu puy py- pyc pye pyk pyr pyu rcc rce rcp rcr rcu re- rec ree rek rep rer reu rey rkc rke rkk rkp rku rky rpc rpe rpk rpp rpr rpu rrc rrk rrp rrr rru ruc rue ruk rup rur ruu ruy ry- ryc rye ryk ryr ryu ryy ucc uce uck ucp ucr ucu uec uee uep uer uey ukc uke ukk ukp ukr uku up- upc upe upk upp upr upu ur- urc ure urk urp urr uru ury uuc uue uur uuu uyc uyu ycc yce ycp ycu ycy yec yee yek yep yer yey ykk ypu yrc yre yrp yru yue yuk yup yur yuu yuy yyc yye yyu yyy