-er -ol c-- ccc cce ccl cco ccr cct ccu ce- cec cee cel ceo cer cet ceu cl- clc cle cll clo clr clt clu co- coc coe col coo cor cot cou crc cre crl cro crr crt cru ctc cte ctl cto ctr ctt ctu cuc cue cul cuo cur cut cuu ec- ecc ece ecl eco ecr ect ecu eec eee eel eeo eer eet elc ele ell elo elr elt elu eo- eoc eoe eol eoo eor eot eou erc ere erl ero err ert eru etc ete etl eto etr ett etu eu- euc eue eul eur eut lcc lce lcl lco lcr lct lcu lec lee lel leo ler let leu llc lle lll llo llr llt llu loc loe lol loo lor lot lou lrc lro lrr lrt lru ltc lte ltl lto ltr ltt ltu luc lue lul luo lur lut luu oc- occ ocl oco ocr oct ocu oec oee oel oeo oer oet olc ole oll olo olt olu oo- ooc ool ooo oor oot or- orc ore orl oro orr ort oru ot- otc ote otl oto otr ott otu ou- ouc oue oul ouo our out rcc rce rcl rco rcr rct rcu re- rec ree rel reo rer ret reu rlc rle rll rlo rlr rlt rlu roc roe rol roo ror rot rou rrc rrl rrr rrt rru rtc rte rtl rto rtr rtt rtu ruc rue ruo rur rut ruu tcc tce tcl tco tcr tct tcu te- tec tee tel teo ter tet teu tlc tle tll tlo tlr tlt tlu to- toc toe tol too tor tot tou trc tre trl tro trr trt tru ttc tte ttl tto ttr ttt ttu tuc tue tul tuo tur tut tuu ucc uce ucl uco ucr uct ucu uec uee uel uer uet ulc ule ull ulo ulr ult ulu uoc uoe uol uoo uor uot ur- urc ure url uro urr urt uru utc ute utl uto utr utt utu uuc uue uur uut uuu