-er -ic c-- ccc cce ccg cci ccn ccr cct ccx ce- cec cee ceg cei cen cer cet cex cgc cge cgg cgi cgn cgr cgt ci- cic cie cig cii cin cir cit cix cn- cnc cne cng cni cnn cnr cnt cnx crc cre crg cri crn crr crt crx ctc cte ctg cti ctn ctr ctt ctx cxc cxi cxr cxt cxx ec- ecc ece ecg eci ecn ecr ect ecx eec eee eeg een eer eet eex egc ege egg egi egn egr egt egx eic eie eig eii ein eir eit eix en- enc ene eng eni enn enr ent erc ere erg eri ern err ert etc ete etg eti etn etr ett etx ex- exc exe exi exr ext exx gcc gce gcg gci gcn gcr gct ge- gec gee geg gei gen ger get gex ggc ggg ggi ggn ggr ggt gic gie gig gii gin gir git gnc gne gni gnn gnr gnt grc gre grg gri grn grr grt grx gtc gte gtg gti gtn gtr gtt gtx gxt icc ice icg ici icn icr ict ie- iec iee ieg iei ien ier iet iex igc ige igg igi ign igr igt iic iie iii iin iir iit iix in- inc ine ing ini inn inr int inx ir- irc ire irg iri irn irr irt irx itc ite itg iti itn itt itx ixc ixe ixi ixn n-i ncc nce ncg nci ncn ncr nct ncx ne- nec nee neg nei nen ner net nex ngc nge ngg ngi ngn ngt nic nie nig nii nin nir nit nix nnc nne nng nni nnn nnt nrc nre nrg nri nrn nrr nrt nrx ntc nte ntg nti ntn ntr ntt ntx nxc nxt rcc rce rcg rci rcn rcr rct rcx re- rec ree reg rei ren rer ret rex rgc rge rgg rgi rgn rgr rgt rgx ric rie rig rii rin rir rit rix rnc rng rni rnn rnr rnt rrc rrg rri rrn rrr rrt rtc rte rtg rti rtn rtr rtt rtx rxr t-x tcc tce tcg tci tcn tcr tct tcx te- tec tee teg tei ten ter tet tex tgc tge tgg tgi tgn tgr tgt tic tie tig tii tin tir tit tix tnc tne tng tni tnn tnr tnt tnx trc tre trg tri trn trr trt trx ttc tte ttg tti ttn ttr ttt ttx txe txi txn txt xci xcr xcx xee xeg xen xer xet xex xge xgi xic xie xii xin xit xix xnc xrc xrt xrx xtc xti xtr xtx xxi xxx