-er -ol c-- ccc cce ccl cco ccr ccs ccu ce- cec cee cel ceo cer ces ceu cl- clc cle cll clo clr cls clu co- coc coe col coo cor cos cou crc cre crl cro crr crs cru csc cse csl cso csr css csu cuc cue cul cuo cur cus cuu ec- ecc ece ecl eco ecr ecs ecu eec eee eel eeo eer ees elc ele ell elo elr els elu eo- eoc eoe eol eoo eor eos eou erc ere erl ero err ers eru es- esc ese esl eso esr ess esu eu- euc eue eul eur eus lcc lce lcl lco lcr lcs lcu lec lee lel leo ler les leu llc lle lll llo llr lls llu loc loe lol loo lor los lou lrc lro lrr lrs lru lsc lse lsl lso lsr lss lsu luc lue lul luo lur lus luu oc- occ ocl oco ocr ocs ocu oec oee oel oeo oer oes olc ole oll olo ols olu oo- ooc ool ooo oor oos or- orc ore orl oro orr ors oru os- osc ose osl oso osr oss osu ou- ouc oue oul ouo our ous rcc rce rcl rco rcr rcs rcu re- rec ree rel reo rer res reu rlc rle rll rlo rlr rls rlu roc roe rol roo ror ros rou rrc rrl rrr rrs rru rsc rse rsl rso rsr rss rsu ruc rue ruo rur rus ruu scc sce scl sco scr scs scu se- sec see sel seo ser ses seu slc sle sll slo slr sls slu soc soe sol soo sor sos sou sr- src sre srl sro srr srs ss- ssc sse ssl sso ssr sss ssu suc sue sul suo sur sus suu ucc uce ucl uco ucr ucs ucu uec uee uel uer ues ulc ule ull ulo ulr uls ulu uoc uoe uol uoo uor uos ur- urc ure url uro urr urs uru usc use usl uso usr uss usu uuc uue uur uus uuu