-er -ic c-- ccc cce cci cck ccp ccr ccz ce- cec cee cei cek cep cer cez ci- cic cie cii cik cip cir ckc cki cpc cpe cpi cpk cpp cpr cpz crc cre cri crk crp crr crz cz- czc cze czk ec- ecc ece eci eck ecr eec eee eek eep eer eic eie eii eik eip eir ekc eke eki ekp ekr ep- epc epe epi epp epr epz erc ere eri erk erp err erz eze ezr ezz icc ice ici ick icp icr icz ie- iec iee iei iek iep ier iic iie iii iip iir ikc ike iki ikk ikr ipc ipe ipi ipp ipr ir- irc ire iri irk irp irr ize izi izz k-z kcc kce kci kck kcp kcr ke- kec kee kei kek kep ker kez kic kie kii kik kip kir kiz kkc kke kki kkk kkp kkr kpc kpe kpi kpk kpp kpr krc kri krk krp krr p-p pcc pce pci pck pcp pcr pec pee pei pek pep per pez pic pie pii pik pip pir piz pkc pke pki pkp pkr ppc ppe ppi ppk ppp ppr ppz prc pre pri prk prp prr prz pzc pzk pzp rcc rce rci rcp rcr re- rec ree rei rek rep rer rez ric rie rii rik rip rir riz rkc rke rkk rkp rkz rpc rpe rpi rpk rpp rpr rpz rrc rri rrk rrp rrr rze zce zec zee zek zep zer zez zie zik zip zir ziz zpc zpe zpi zpp zpr zrp zzr zzz