-er -ic c-- ccc cce cci cck ccl ccp ccr ce- cec cee cei cek cel cep cer ci- cic cie cii cik cil cip cir ckc cki cl- clc cle cli clk cll clp clr cpc cpe cpi cpk cpl cpp cpr crc cre cri crk crl crp crr ec- ecc ece eci eck ecl ecr eec eee eek eel eep eer eic eie eii eik eil eip eir ekc eke eki ekl ekp ekr elc ele eli elk ell elp elr ep- epc epe epi epl epp epr erc ere eri erk erl erp err icc ice ici ick icl icp icr ie- iec iee iei iek iel iep ier iic iie iii iil iip iir ikc ike iki ikk ikl ikr il- ilc ile ili ilk ill ilp ilr ipc ipe ipi ipl ipp ipr ir- irc ire iri irk irl irp irr kcc kce kci kck kcl kcp kcr ke- kec kee kei kek kel kep ker kic kie kii kik kil kip kir kkc kke kki kkk kkl kkp kkr kl- klc kli klr kpc kpe kpi kpk kpl kpp kpr krc kri krk krl krp krr l-p lcc lce lci lck lcl lcp lcr lec lee lei lek lel lep ler lic lie lii lik lil lip lir lkl lkp lkr llc lle lli llk lll llp llr lpc lpe lpi lpk lpl lpp lpr lrc lri lrk lrp lrr p-p pcc pce pci pck pcl pcp pcr pec pee pei pek pel pep per pic pie pii pik pil pip pir pkc pke pki pkl pkp pkr plc ple pli plk pll plp plr ppc ppe ppi ppk ppl ppp ppr prc pre pri prk prl prp prr rcc rce rci rcl rcp rcr re- rec ree rei rek rel rep rer ric rie rii rik ril rip rir rkc rke rkk rkp rlc rle rli rll rlp rlr rpc rpe rpi rpk rpl rpp rpr rrc rri rrk rrl rrp rrr