-er -ey a-a a-c a-t aaa aac aae aag aao aar aat aau aay ac- aca acc ace acg aco acr act acu acy aea aec aee aeg aeo aer aet aeu aey ag- aga agc age agg ago agr agt agu agy aoa aoc aoe aog aoo aor aot aou ar- ara arc are arg aro arr art aru ary at- ata atc ate atg ato atr att atu au- aua auc aue aug auo aur aut ay- aya ayc aye ayo ayr ayt ayu c-- caa cac cae cag cao car cat cau cay cca ccc cce ccg cco ccr cct ccu ce- cea cec cee ceg ceo cer cet ceu cey cga cgc cge cgg cgo cgr cgt cgu cgy co- coa coc coe cog coo cor cot cou coy cra crc cre crg cro crr crt cru cry cta ctc cte ctg cto ctr ctt ctu cty cua cuc cue cug cuo cur cut cuu cuy cya cyc cye cyg cyo cyr cyt eaa eac eae eag eao ear eat eau ec- eca ecc ece ecg eco ecr ect ecu eea eec eee eeg eeo eer eet eey ega egc ege egg ego egr egt egu egy eo- eoa eoc eoe eog eoo eor eot eou era erc ere erg ero err ert eru ery eta etc ete etg eto etr ett etu ety eu- eua euc eue eug eur eut eya eyc eye eyo eyr eyt gaa gac gae gag gao gar gat gau gay gca gcc gce gcg gco gcr gct gcu ge- gea gec gee geg geo ger get geu gey gga ggc ggg ggo ggr ggt ggu goa goc goe gog goo gor got gou goy gra grc gre grg gro grr grt gru gry gta gtc gte gtg gto gtr gtt gtu gty gu- gua guc gue gug guo gur gut guu guy gy- gya gye gyo gyr oaa oac oae oag oao oar oat oau oc- oca occ ocg oco ocr oct ocu oea oec oee oeg oeo oer oet oey oga ogc oge ogg ogo ogt ogy oo- ooa ooc oog ooo oor oot or- ora orc ore org oro orr ort oru ory ot- ota otc ote otg oto otr ott otu ou- oua ouc oue ouo our out oya oye oyo ra- raa rac rae rag rao rar rat rau ray rca rcc rce rcg rco rcr rct rcu re- rea rec ree reg reo rer ret reu rey rga rgc rge rgg rgo rgr rgt roa roc roe rog roo ror rot rou roy rra rrc rrg rrr rrt rru rta rtc rte rtg rto rtr rtt rtu rty rua ruc rue rug ruo rur rut ruu ruy ry- rya ryc rye ryg ryo ryr ryu ryy taa tac tae tag tao tar tat tau tay tca tcc tce tcg tco tcr tct tcu te- tea tec tee teg teo ter tet teu tey tga tgc tge tgg tgo tgr tgt tgu tgy to- toa toc toe tog too tor tot tou toy tra trc tre trg tro trr trt tru try tta ttc tte ttg tto ttr ttt ttu tty tua tuc tue tug tuo tur tut tuu tuy tya tyc tye tyg tyo tyr tyt ua- uaa uac uae uag uao uar uat uau uay uca ucc uce ucg uco ucr uct ucu uea uec uee ueg uer uet uey uga ugc uge ugg ugo ugr ugt ugu uoa uoc uoe uog uoo uor uot ur- ura urc ure urg uro urr urt uru ury uta utc ute uto utr utt utu uty uua uuc uue uug uur uut uuu uyc uyo uyu yaa yac yae yag yao yar yat yau yay yca ycc yce yco ycu ycy yea yec yee yeg yeo yer yet yey yga ygc ygo yoc yoe yog yoo yor yot you yoy yra yrc yre yrg yro yrt yru yta ytc yte yto ytr ytt ytu yua yue yug yuo yur yut yuu yuy yyc yye yyg yyt yyu yyy