-al -er a-a a-c aaa aac aae aag aal aan aar aas ac- aca acc ace acg acl acn acr acs aea aec aee aeg ael aen aer aes ag- aga agc age agg agl agn agr ags al- ala alc ale alg all aln alr als an- ana anc ane ang anl ann anr ans ar- ara arc are arg arl arn arr ars as- asa asc ase asg asl asn asr ass c-- caa cac cae cag cal can car cas cca ccc cce ccg ccl ccn ccr ccs ce- cea cec cee ceg cel cen cer ces cga cgc cge cgg cgl cgn cgr cgs cl- cla clc cle clg cll cln clr cls cn- cna cnc cne cng cnl cnn cnr cns cra crc cre crg crl crn crr crs csa csc cse csg csl csn csr css eaa eac eae eag eal ean ear eas ec- eca ecc ece ecg ecl ecn ecr ecs eea eec eee eeg eel een eer ees ega egc ege egg egl egn egr egs ela elc ele elg ell eln elr els en- ena enc ene eng enl enn enr ens era erc ere erg erl ern err ers es- esa esc ese esg esl esn esr ess gaa gac gae gag gal gan gar gas gca gcc gce gcg gcl gcn gcr gcs ge- gea gec gee geg gel gen ger ges gga ggc ggg ggn ggr ggs gla glc gle glg gll gln glr gls gna gnc gne gnl gnn gnr gns gra grc gre grg grl grn grr grs gsa gsc gse gsg gsl gsn gsr gss la- laa lac lae lag lal lan lar las lca lcc lce lcg lcl lcn lcr lcs lea lec lee leg lel len ler les lga lgc lge lgg lgl lgn lgr lgs lla llc lle llg lll lln llr lls lna lnc lne lng lnl lnn lnr lns lra lrc lrg lrn lrr lrs lsa lsc lse lsg lsl lsn lsr lss naa nac nae nag nal nan nar nas nca ncc nce ncg ncl ncn ncr ncs ne- nea nec nee neg nel nen ner nes nga ngc nge ngg ngl ngn ngs nla nlc nle nlg nll nln nlr nls nna nnc nne nng nnl nnn nns nra nrc nre nrg nrl nrn nrr nrs nsa nsc nse nsg nsl nsn nsr nss ra- raa rac rae rag ral ran rar ras rca rcc rce rcg rcl rcn rcr rcs re- rea rec ree reg rel ren rer res rga rgc rge rgg rgn rgr rgs rla rlc rle rlg rll rln rlr rls rna rnc rng rnn rnr rns rra rrc rrg rrl rrn rrr rrs rsa rsc rse rsg rsl rsn rsr rss saa sac sae sag sal san sar sas sca scc sce scg scl scn scr scs se- sea sec see seg sel sen ser ses sga sgc sge sgg sgl sgn sgr sgs sla slc sle slg sll sln slr sls sna snc sne sng snl snn snr sns sr- sra src sre srg srl srn srr srs ss- ssa ssc sse ssg ssl ssn ssr sss