-er -ol c-- ccc cce ccl ccm cco ccr ce- cec cee cel cem ceo cer cl- clc cle cll clm clo clr cmc cme cml cmm cmo cmr co- coc coe col com coo cor crc cre crl crm cro crr ec- ecc ece ecl ecm eco ecr eec eee eel eem eeo eer elc ele ell elm elo elr em- emc eme eml emm emo emr eo- eoc eoe eol eom eoo eor erc ere erl erm ero err lcc lce lcl lcm lco lcr lec lee lel lem leo ler llc lle lll llm llo llr lmc lme lml lmm lmo lmr loc loe lol lom loo lor lrc lrm lro lrr m-o m-r mc- mcc mce mcl mcm mco mcr mec mee mel mem meo mer mlc mle mll mlm mlo mlr mmc mme mml mmm mmo mmr moc moe mol mom moo mor mrc mre mrl mrm mro mrr oc- occ ocl ocm oco ocr oec oee oel oem oeo oer olc ole oll olm olo om- omc ome oml omm omo omr oo- ooc ool oom ooo oor or- orc ore orl orm oro orr rcc rce rcl rcm rco rcr re- rec ree rel rem reo rer rlc rle rll rlm rlo rlr rmc rme rml rmm rmo rmr roc roe rol rom roo ror rrc rrl rrm rrr