-er c-- ccc cce ccg ccl ccn ccr ce- cec cee ceg cel cen cer cgc cge cgg cgl cgn cgr cl- clc cle clg cll cln clr cn- cnc cne cng cnl cnn cnr crc cre crg crl crn crr ec- ecc ece ecg ecl ecn ecr eec eee eeg eel een eer egc ege egg egl egn egr elc ele elg ell eln elr en- enc ene eng enl enn enr erc ere erg erl ern err gcc gce gcg gcl gcn gcr ge- gec gee geg gel gen ger ggc ggg ggn ggr glc gle glg gll gln glr gnc gne gnl gnn gnr grc gre grg grl grn grr lcc lce lcg lcl lcn lcr lec lee leg lel len ler lgc lge lgg lgl lgn lgr llc lle llg lll lln llr lnc lne lng lnl lnn lnr lrc lrg lrn lrr ncc nce ncg ncl ncn ncr ne- nec nee neg nel nen ner ngc nge ngg ngl ngn nlc nle nlg nll nln nlr nnc nne nng nnl nnn nrc nre nrg nrl nrn nrr rcc rce rcg rcl rcn rcr re- rec ree reg rel ren rer rgc rge rgg rgn rgr rlc rle rlg rll rln rlr rnc rng rnn rnr rrc rrg rrl rrn rrr