-er c-- ccc cce ccg ccn ccr ccv ce- cec cee ceg cen cer cev cgc cge cgg cgn cgr cgv cn- cnc cne cng cnn cnr cnv crc cre crg crn crr crv cvc cve cvg cvn cvr cvv ec- ecc ece ecg ecn ecr ecv eec eee eeg een eer eev egc ege egg egn egr en- enc ene eng enn enr env erc ere erg ern err erv evc eve evg evn evr evv gcc gce gcg gcn gcr ge- gec gee geg gen ger gev ggc ggg ggn ggr ggv gnc gne gnn gnr gnv grc gre grg grn grr grv gvc gve gvg gvn gvr ncc nce ncg ncn ncr ncv ne- nec nee neg nen ner nev ngc nge ngg ngn nnc nne nng nnn nnv nrc nre nrg nrn nrr nrv nvc nve nvg nvn nvv rcc rce rcg rcn rcr rcv re- rec ree reg ren rer rev rgc rge rgg rgn rgr rgv rnc rng rnn rnr rnv rrc rrg rrn rrr rvc rve rvg rvn rvr rvv v-e vcc vce vcn vcr vec vee veg ven ver vgc vgg vgn vgr vn- vng vnr vnv vrc vre vrg vrn vrr vvc vvg vvr vvv