-al -er a-a a-c a-t aaa aac aae aag aal aar aas aat ac- aca acc ace acg acl acr acs act aea aec aee aeg ael aer aes aet ag- aga agc age agg agl agr ags agt al- ala alc ale alg all alr als alt ar- ara arc are arg arl arr ars art as- asa asc ase asg asl asr ass ast at- ata atc ate atg atl atr ats att c-- caa cac cae cag cal car cas cat cca ccc cce ccg ccl ccr ccs cct ce- cea cec cee ceg cel cer ces cet cga cgc cge cgg cgl cgr cgs cgt cl- cla clc cle clg cll clr cls clt cra crc cre crg crl crr crs crt csa csc cse csg csl csr css cst cta ctc cte ctg ctl ctr cts ctt eaa eac eae eag eal ear eas eat ec- eca ecc ece ecg ecl ecr ecs ect eea eec eee eeg eel eer ees eet ega egc ege egg egl egr egs egt ela elc ele elg ell elr els elt era erc ere erg erl err ers ert es- esa esc ese esg esl esr ess est eta etc ete etg etl etr ets ett gaa gac gae gag gal gar gas gat gca gcc gce gcg gcl gcr gcs gct ge- gea gec gee geg gel ger ges get gga ggc ggg ggr ggs ggt gla glc gle glg gll glr gls glt gra grc gre grg grl grr grs grt gsa gsc gse gsg gsl gsr gss gst gta gtc gte gtg gtl gtr gts gtt la- laa lac lae lag lal lar las lat lca lcc lce lcg lcl lcr lcs lct lea lec lee leg lel ler les let lga lgc lge lgg lgl lgr lgs lgt lla llc lle llg lll llr lls llt lra lrc lrg lrr lrs lrt lsa lsc lse lsg lsl lsr lss lst lta ltc lte ltg ltl ltr lts ltt ra- raa rac rae rag ral rar ras rat rca rcc rce rcg rcl rcr rcs rct re- rea rec ree reg rel rer res ret rga rgc rge rgg rgr rgs rgt rla rlc rle rlg rll rlr rls rlt rra rrc rrg rrl rrr rrs rrt rsa rsc rse rsg rsl rsr rss rst rta rtc rte rtg rtl rtr rts rtt saa sac sae sag sal sar sas sat sca scc sce scg scl scr scs sct se- sea sec see seg sel ser ses set sga sgc sge sgg sgl sgr sgs sgt sla slc sle slg sll slr sls slt sr- sra src sre srg srl srr srs srt ss- ssa ssc sse ssg ssl ssr sss sst sta stc ste stg stl str sts stt taa tac tae tag tal tar tas tat tca tcc tce tcg tcl tcr tcs tct te- tea tec tee teg tel ter tes tet tga tgc tge tgg tgl tgr tgs tgt tla tlc tle tlg tll tlr tls tlt tra trc tre trg trl trr trs trt tsa tsc tse tsg tsl tsr tss tst tta ttc tte ttg ttl ttr tts ttt