-er -ol c-- ccc cce cck ccl ccm cco ccr ccu ce- cec cee cek cel cem ceo cer ceu ckc ckm cko cl- clc cle clk cll clm clo clr clu cmc cme cmk cml cmm cmo cmr cmu co- coc coe cok col com coo cor cou crc cre crk crl crm cro crr cru cuc cue cuk cul cum cuo cur cuu ec- ecc ece eck ecl ecm eco ecr ecu eec eee eek eel eem eeo eer ekc eke ekl eko ekr eku elc ele elk ell elm elo elr elu em- emc eme emk eml emm emo emr emu eo- eoc eoe eok eol eom eoo eor eou erc ere erk erl erm ero err eru eu- euc eue eul eur kcc kce kck kcl kcm kcr kcu ke- kec kee kek kel kem keo ker kkc kke kkk kkl kkm kkr kku kl- klc klm klo klr klu kmc kme kmk kml kmm kmo kmu koc koe kok kol kom koo kor kou krc krk krl kro krr kru kuc kue kuk kul kum kur kuu lcc lce lck lcl lcm lco lcr lcu lec lee lek lel lem leo ler leu lkl lkr llc lle llk lll llm llo llr llu lmc lme lmk lml lmm lmo lmr lmu loc loe lok lol lom loo lor lou lrc lrk lrm lro lrr lru luc lue luk lul lum luo lur luu m-o m-r mc- mcc mce mck mcl mcm mco mcr mcu mec mee mek mel mem meo mer meu mkc mke mkk mkl mkm mko mkr mku mlc mle mlk mll mlm mlo mlr mlu mmc mme mmk mml mmm mmo mmr mmu moc moe mok mol mom moo mor mou mrc mre mrk mrl mrm mro mrr mru muc mue muk mul mum mur muu oc- occ ock ocl ocm oco ocr ocu oec oee oel oem oeo oer okc oke okk okl oko okr oku olc ole olk oll olm olo olu om- omc ome oml omm omo omr omu oo- ooc ook ool oom ooo oor or- orc ore ork orl orm oro orr oru ou- ouc oue ouk oul oum ouo our rcc rce rcl rcm rco rcr rcu re- rec ree rek rel rem reo rer reu rkc rke rkk rkm rko rku rlc rle rll rlm rlo rlr rlu rmc rme rml rmm rmo rmr roc roe rok rol rom roo ror rou rrc rrk rrl rrm rrr rru ruc rue ruk rum ruo rur ruu ucc uce uck ucl ucm uco ucr ucu uec uee uel uem uer ukc uke ukk ukl ukr uku ulc ule ulk ull ulm ulo ulr ulu um- umc ume uml umm umo umr umu uoc uoe uok uol uom uoo uor ur- urc ure urk url urm uro urr uru uuc uue uum uur uuu