-er c-- ccc cce ccl ccm ccr ccs ccu ce- cec cee cel cem cer ces ceu cl- clc cle cll clm clr cls clu cmc cme cml cmm cmr cms cmu crc cre crl crm crr crs cru csc cse csl csm csr css csu cuc cue cul cum cur cus cuu ec- ecc ece ecl ecm ecr ecs ecu eec eee eel eem eer ees elc ele ell elm elr els elu em- emc eme eml emm emr ems emu erc ere erl erm err ers eru es- esc ese esl esm esr ess esu eu- euc eue eul eur eus lcc lce lcl lcm lcr lcs lcu lec lee lel lem ler les leu llc lle lll llm llr lls llu lmc lme lml lmm lmr lms lmu lrc lrm lrr lrs lru lsc lse lsl lsm lsr lss lsu luc lue lul lum lur lus luu m-r mc- mcc mce mcl mcm mcr mcs mcu mec mee mel mem mer mes meu mlc mle mll mlm mlr mls mlu mmc mme mml mmm mmr mms mmu mrc mre mrl mrm mrr mrs mru msc mse msl msm msr mss msu muc mue mul mum mur mus muu rcc rce rcl rcm rcr rcs rcu re- rec ree rel rem rer res reu rlc rle rll rlm rlr rls rlu rmc rme rml rmm rmr rms rrc rrl rrm rrr rrs rru rsc rse rsl rsm rsr rss rsu ruc rue rum rur rus ruu scc sce scl scm scr scs scu se- sec see sel sem ser ses seu slc sle sll slm slr sls slu smc sme sml smm smr sms smu sr- src sre srl srm srr srs ss- ssc sse ssl ssm ssr sss ssu suc sue sul sum sur sus suu ucc uce ucl ucm ucr ucs ucu uec uee uel uem uer ues ulc ule ull ulm ulr uls ulu um- umc ume uml umm umr ums umu ur- urc ure url urm urr urs uru usc use usl usm usr uss usu uuc uue uum uur uus uuu