-er -ey a-a a-c a-t aaa aac aae aag aao aar aas aat aay ac- aca acc ace acg aco acr acs act acy aea aec aee aeg aeo aer aes aet aey ag- aga agc age agg ago agr ags agt agy aoa aoc aoe aog aoo aor aos aot ar- ara arc are arg aro arr ars art ary as- asa asc ase asg aso asr ass ast asy at- ata atc ate atg ato atr ats att ay- aya ayc aye ayo ayr ays ayt c-- caa cac cae cag cao car cas cat cay cca ccc cce ccg cco ccr ccs cct ce- cea cec cee ceg ceo cer ces cet cey cga cgc cge cgg cgo cgr cgs cgt cgy co- coa coc coe cog coo cor cos cot coy cra crc cre crg cro crr crs crt cry csa csc cse csg cso csr css cst csy cta ctc cte ctg cto ctr cts ctt cty cya cyc cye cyg cyo cyr cys cyt eaa eac eae eag eao ear eas eat ec- eca ecc ece ecg eco ecr ecs ect eea eec eee eeg eeo eer ees eet eey ega egc ege egg ego egr egs egt egy eo- eoa eoc eoe eog eoo eor eos eot era erc ere erg ero err ers ert ery es- esa esc ese esg eso esr ess est esy eta etc ete etg eto etr ets ett ety eya eyc eye eyo eyr eys eyt gaa gac gae gag gao gar gas gat gay gca gcc gce gcg gco gcr gcs gct ge- gea gec gee geg geo ger ges get gey gga ggc ggg ggo ggr ggs ggt goa goc goe gog goo gor gos got goy gra grc gre grg gro grr grs grt gry gsa gsc gse gsg gso gsr gss gst gta gtc gte gtg gto gtr gts gtt gty gy- gya gye gyo gyr gys oaa oac oae oag oao oar oas oat oc- oca occ ocg oco ocr ocs oct oea oec oee oeg oeo oer oes oet oey oga ogc oge ogg ogo ogs ogt ogy oo- ooa ooc oog ooo oor oos oot or- ora orc ore org oro orr ors ort ory os- osa osc ose osg oso osr oss ost ot- ota otc ote otg oto otr ots ott oya oye oyo oys ra- raa rac rae rag rao rar ras rat ray rca rcc rce rcg rco rcr rcs rct re- rea rec ree reg reo rer res ret rey rga rgc rge rgg rgo rgr rgs rgt roa roc roe rog roo ror ros rot roy rra rrc rrg rrr rrs rrt rsa rsc rse rsg rso rsr rss rst rta rtc rte rtg rto rtr rts rtt rty ry- rya ryc rye ryg ryo ryr rys ryy saa sac sae sag sao sar sas sat say sca scc sce scg sco scr scs sct se- sea sec see seg seo ser ses set sey sga sgc sge sgg sgo sgr sgs sgt soa soc soe sog soo sor sos sot soy sr- sra src sre srg sro srr srs srt sry ss- ssa ssc sse ssg sso ssr sss sst sta stc ste stg sto str sts stt sty sy- sya syc sye syg syr sys syt taa tac tae tag tao tar tas tat tay tca tcc tce tcg tco tcr tcs tct te- tea tec tee teg teo ter tes tet tey tga tgc tge tgg tgo tgr tgs tgt tgy to- toa toc toe tog too tor tos tot toy tra trc tre trg tro trr trs trt try tsa tsc tse tsg tso tsr tss tst tsy tta ttc tte ttg tto ttr tts ttt tty tya tyc tye tyg tyo tyr tys tyt yaa yac yae yag yao yar yas yat yay yca ycc yce yco ycs ycy yea yec yee yeg yeo yer yes yet yey yga ygc ygo yoc yoe yog yoo yor yos yot yoy yra yrc yre yrg yro yrs yrt ysa ysc yse ysg yso ysr yss yst ysy yta ytc yte yto ytr yts ytt yyc yye yyg yys yyt yyy