-er c-- ccc cce ccg cco ccr ccu ccv ce- cec cee ceg ceo cer ceu cev cgc cge cgg cgo cgr cgu cgv co- coc coe cog coo cor cou cov crc cre crg cro crr cru crv cuc cue cug cuo cur cuu cuv cvc cve cvg cvo cvr cvu cvv ec- ecc ece ecg eco ecr ecu ecv eec eee eeg eeo eer eev egc ege egg ego egr egu eo- eoc eoe eog eoo eor eou erc ere erg ero err eru erv eu- euc eue eug eur euv evc eve evg evo evr evv gcc gce gcg gco gcr gcu ge- gec gee geg geo ger geu gev ggc ggg ggo ggr ggu ggv goc goe gog goo gor gou gov grc gre grg gro grr gru grv gu- guc gue gug guo gur guu guv gvc gve gvg gvo gvr gvu oc- occ ocg oco ocr ocu ocv oec oee oeg oeo oer ogc oge ogg ogo oo- ooc oog ooo oor oov or- orc ore org oro orr oru orv ou- ouc oue ouo our ov- ovc ove ovo ovv rcc rce rcg rco rcr rcu rcv re- rec ree reg reo rer reu rev rgc rge rgg rgo rgr rgv roc roe rog roo ror rou rov rrc rrg rrr rru ruc rue rug ruo rur ruu ruv rvc rve rvg rvo rvr rvu rvv ucc uce ucg uco ucr ucu ucv uec uee ueg uer ugc uge ugg ugo ugr ugu uoc uoe uog uoo uor ur- urc ure urg uro urr uru uuc uue uug uur uuu uvc uve uvo uvu uvv v-e vcc vce vco vcr vcu vec vee veg veo ver veu vgc vgg vgo vgr vgu voc voe vog voo vor vou vov vrc vre vrg vrr vru vue vug vur vuv vvc vvg vvo vvr vvv