-er -ol c-- ccc cce ccl ccn cco ccr ccu ce- cec cee cel cen ceo cer ceu cl- clc cle cll cln clo clr clu cn- cnc cne cnl cnn cno cnr cnu co- coc coe col con coo cor cou crc cre crl crn cro crr cru cuc cue cul cun cuo cur cuu ec- ecc ece ecl ecn eco ecr ecu eec eee eel een eeo eer elc ele ell eln elo elr elu en- enc ene enl enn eno enr enu eo- eoc eoe eol eon eoo eor eou erc ere erl ern ero err eru eu- euc eue eul eun eur lcc lce lcl lcn lco lcr lcu lec lee lel len leo ler leu llc lle lll lln llo llr llu lnc lne lnl lnn lno lnr lnu loc loe lol lon loo lor lou lrc lrn lro lrr lru luc lue lul lun luo lur luu ncc nce ncl ncn nco ncr ncu ne- nec nee nel nen neo ner neu nlc nle nll nln nlo nlr nlu nnc nne nnl nnn nno nnu no- noc noe nol non noo nor nou nrc nre nrl nrn nro nrr nru nuc nue nul nun nuo nur nuu oc- occ ocl ocn oco ocr ocu oec oee oel oen oeo oer olc ole oll oln olo olu on- onc one onl onn ono onr onu oo- ooc ool oon ooo oor or- orc ore orl orn oro orr oru ou- ouc oue oul oun ouo our rcc rce rcl rcn rco rcr rcu re- rec ree rel ren reo rer reu rlc rle rll rln rlo rlr rlu rnc rnn rno rnr rnu roc roe rol ron roo ror rou rrc rrl rrn rrr rru ruc rue run ruo rur ruu ucc uce ucl ucn uco ucr ucu uec uee uel uen uer ulc ule ull uln ulo ulr ulu un- unc une unl unn uno unr unu uoc uoe uol uon uoo uor ur- urc ure url urn uro urr uru uuc uue uun uur uuu