-er c-- ccc ccd cce ccg ccl ccn ccr cct cdc cdd cde cdg cdl cdn cdr cdt ce- cec ced cee ceg cel cen cer cet cgc cgd cge cgg cgl cgn cgr cgt cl- clc cld cle clg cll cln clr clt cn- cnc cnd cne cng cnl cnn cnr cnt crc crd cre crg crl crn crr crt ctc ctd cte ctg ctl ctn ctr ctt dcc dcd dce dcg dcl dcn dcr dct ddc ddd dde ddg ddl ddn ddr ddt de- dec ded dee deg del den der det dgc dgd dge dgg dgl dgn dgr dgt dl- dlc dld dle dlg dll dlr dlt dnc dnd dne dng dnl dnn dnr dnt drc drd dre drg drl drn drr drt dtc dtd dte dtg dtl dtn dtr dtt ec- ecc ecd ece ecg ecl ecn ecr ect ed- edc edd ede edg edl edn edr edt eec eed eee eeg eel een eer eet egc egd ege egg egl egn egr egt elc eld ele elg ell eln elr elt en- enc end ene eng enl enn enr ent erc erd ere erg erl ern err ert etc etd ete etg etl etn etr ett g-d gcc gcd gce gcg gcl gcn gcr gct gdc gdd gde gdl gdn gdr gdt ge- gec ged gee geg gel gen ger get ggc ggd ggg ggn ggr ggt glc gld gle glg gll gln glr glt gnc gnd gne gnl gnn gnr gnt grc grd gre grg grl grn grr grt gtc gtd gte gtg gtl gtn gtr gtt lcc lcd lce lcg lcl lcn lcr lct ldc ldd lde ldg ldl ldn ldr ldt lec led lee leg lel len ler let lgc lgd lge lgg lgl lgn lgr lgt llc lld lle llg lll lln llr llt lnc lnd lne lng lnl lnn lnr lnt lrc lrd lrg lrn lrr lrt ltc ltd lte ltg ltl ltr ltt ncc ncd nce ncg ncl ncn ncr nct ndc ndd nde ndg ndl ndn ndr ndt ne- nec ned nee neg nel nen ner net ngc ngd nge ngg ngl ngn ngt nlc nld nle nlg nll nln nlr nlt nnc nne nng nnl nnn nnt nrc nrd nre nrg nrl nrn nrr nrt ntc ntd nte ntg ntn ntr ntt rcc rcd rce rcg rcl rcn rcr rct rdc rdd rde rdg rdl rdn rdr rdt re- rec red ree reg rel ren rer ret rgc rgd rge rgg rgn rgr rgt rlc rld rle rlg rll rln rlr rlt rnc rnd rng rnn rnr rnt rrc rrd rrg rrl rrn rrr rrt rtc rtd rte rtg rtl rtn rtr rtt tcc tcd tce tcg tcl tcn tcr tct tdc tdd tde tdg tdl tdn tdr tdt te- tec ted tee teg tel ten ter tet tgc tge tgg tgl tgn tgr tgt tlc tld tle tlg tll tln tlr tlt tnc tnd tne tng tnl tnn tnr tnt trc trd tre trg trl trn trr trt ttc ttd tte ttg ttl ttn ttr ttt