-er -ic -up c-- ccc cce cci cck ccl ccp ccr ccu ce- cec cee cei cek cel cep cer ceu ci- cic cie cii cik cil cip cir ciu ckc cki cl- clc cle cli clk cll clp clr clu cpc cpe cpi cpk cpl cpp cpr cpu crc cre cri crk crl crp crr cru cuc cue cui cuk cul cup cur cuu ec- ecc ece eci eck ecl ecr ecu eec eee eek eel eep eer eic eie eii eik eil eip eir eiu ekc eke eki ekl ekp ekr eku elc ele eli elk ell elp elr elu ep- epc epe epi epl epp epr epu erc ere eri erk erl erp err eru eu- euc eue eui eul eup eur icc ice ici ick icl icp icr icu ie- iec iee iei iek iel iep ier iic iie iii iil iip iir iiu ikc ike iki ikk ikl ikr iku il- ilc ile ili ilk ill ilp ilr ilu ipc ipe ipi ipl ipp ipr ipu ir- irc ire iri irk irl irp irr iru iu- iuc iue iui iup iur kcc kce kci kck kcl kcp kcr kcu ke- kec kee kei kek kel kep ker kic kie kii kik kil kip kir kiu kkc kke kki kkk kkl kkp kkr kku kl- klc kli klr klu kpc kpe kpi kpk kpl kpp kpr kpu krc kri krk krl krp krr kru kuc kue kui kuk kul kup kur kuu l-p lcc lce lci lck lcl lcp lcr lcu lec lee lei lek lel lep ler leu lic lie lii lik lil lip lir liu lkl lkp lkr llc lle lli llk lll llp llr llu lpc lpe lpi lpk lpl lpp lpr lpu lrc lri lrk lrp lrr lru luc lue lui luk lul lup lur luu p-p pcc pce pci pck pcl pcp pcr pcu pec pee pei pek pel pep per peu pic pie pii pik pil pip pir piu pkc pke pki pkl pkp pkr pku plc ple pli plk pll plp plr plu ppc ppe ppi ppk ppl ppp ppr ppu prc pre pri prk prl prp prr pru puc pue pui puk pul pup pur puu rcc rce rci rcl rcp rcr rcu re- rec ree rei rek rel rep rer reu ric rie rii rik ril rip rir rkc rke rkk rkp rku rlc rle rli rll rlp rlr rlu rpc rpe rpi rpk rpl rpp rpr rpu rrc rri rrk rrl rrp rrr rru ruc rue rui ruk rup rur ruu ucc uce uci uck ucl ucp ucr ucu uec uee uei uel uep uer uic uie uii uil uip uir uiu ukc uke uki ukk ukl ukp ukr uku ulc ule uli ulk ull ulp ulr ulu up- upc upe upi upk upp upr upu ur- urc ure uri urk url urp urr uru uuc uue uur uuu