-er -ey -ic c-- ccc cce cci cck cco ccp ccr ce- cec cee cei cek ceo cep cer cey ci- cic cie cii cik cio cip cir ckc cki cko cky co- coc coe coi cok coo cop cor coy cpc cpe cpi cpk cpo cpp cpr crc cre cri crk cro crp crr cry cyc cye cyk cyo cyp cyr ec- ecc ece eci eck eco ecr eec eee eek eeo eep eer eey eic eie eii eik eio eip eir ekc eke eki eko ekp ekr eky eo- eoc eoe eoi eok eoo eop eor ep- epc epe epi epo epp epr erc ere eri erk ero erp err ery eyc eye eyo eyp eyr icc ice ici ick ico icp icr icy ie- iec iee iei iek iep ier iey iic iie iii iio iip iir ikc ike iki ikk iko ikr io- ioc ioe ioi ioo iop ior ipc ipe ipi ipo ipp ipr ipy ir- irc ire iri irk iro irp irr iry iyc iye iyo iyr iyy kcc kce kci kck kcp kcr ke- kec kee kei kek keo kep ker key kic kie kii kik kio kip kir kkc kke kki kkk kkp kkr kky koc koe koi kok koo kop kor koy kpc kpe kpi kpk kpo kpp kpr krc kri krk kro krp krr kry kyc kye kyo kyp kyr o-i oc- occ oci ock oco ocp ocr oec oee oei oeo oep oer oey oic oie oii oik oio oip oir okc oke oki okk oko okp okr oo- ooc ooi ook ooo oop oor op- opc ope opi opk opo opp opr opy or- orc ore ori ork oro orp orr ory oye oyi oyo p-p pcc pce pci pck pco pcp pcr pec pee pei pek peo pep per pey pic pie pii pik pio pip pir pkc pke pki pko pkp pkr pky poc poe poi pok poo pop por poy ppc ppe ppi ppk ppo ppp ppr prc pre pri prk pro prp prr pry py- pyc pye pyk pyo pyr rcc rce rci rco rcp rcr re- rec ree rei rek reo rep rer rey ric rie rii rik rio rip rir riy rkc rke rkk rko rkp rky roc roe roi rok roo rop ror roy rpc rpe rpi rpk rpo rpp rpr rrc rri rrk rrp rrr ry- ryc rye ryk ryo ryr ryy ycc yce yci yco ycp ycy yec yee yei yek yeo yep yer yey yie yii yio yip yir yki ykk yoc yoe yoi yok yoo yop yor yoy ypo yrc yre yro yrp yyc yye yyy