-er a-a a-c a-t aaa aac aae aag aan aao aar aat aau ac- aca acc ace acg acn aco acr act acu aea aec aee aeg aen aeo aer aet aeu ag- aga agc age agg agn ago agr agt agu an- ana anc ane ang ann ano anr ant anu aoa aoc aoe aog aon aoo aor aot aou ar- ara arc are arg arn aro arr art aru at- ata atc ate atg atn ato atr att atu au- aua auc aue aug aun auo aur aut c-- caa cac cae cag can cao car cat cau cca ccc cce ccg ccn cco ccr cct ccu ce- cea cec cee ceg cen ceo cer cet ceu cga cgc cge cgg cgn cgo cgr cgt cgu cn- cna cnc cne cng cnn cno cnr cnt cnu co- coa coc coe cog con coo cor cot cou cra crc cre crg crn cro crr crt cru cta ctc cte ctg ctn cto ctr ctt ctu cua cuc cue cug cun cuo cur cut cuu eaa eac eae eag ean eao ear eat eau ec- eca ecc ece ecg ecn eco ecr ect ecu eea eec eee eeg een eeo eer eet ega egc ege egg egn ego egr egt egu en- ena enc ene eng enn eno enr ent enu eo- eoa eoc eoe eog eon eoo eor eot eou era erc ere erg ern ero err ert eru eta etc ete etg etn eto etr ett etu eu- eua euc eue eug eun eur eut gaa gac gae gag gan gao gar gat gau gca gcc gce gcg gcn gco gcr gct gcu ge- gea gec gee geg gen geo ger get geu gga ggc ggg ggn ggo ggr ggt ggu gna gnc gne gnn gno gnr gnt gnu goa goc goe gog gon goo gor got gou gra grc gre grg grn gro grr grt gru gta gtc gte gtg gtn gto gtr gtt gtu gu- gua guc gue gug gun guo gur gut guu naa nac nae nag nan nao nar nat nau nca ncc nce ncg ncn nco ncr nct ncu ne- nea nec nee neg nen neo ner net neu nga ngc nge ngg ngn ngo ngt ngu nna nnc nne nng nnn nno nnt nnu no- noa noc noe nog non noo nor not nou nra nrc nre nrg nrn nro nrr nrt nru nta ntc nte ntg ntn nto ntr ntt ntu nua nuc nue nug nun nuo nur nut nuu oaa oac oae oag oan oao oar oat oau oc- oca occ ocg ocn oco ocr oct ocu oea oec oee oeg oen oeo oer oet oga ogc oge ogg ogn ogo ogt on- ona onc one ong onn ono onr ont onu oo- ooa ooc oog oon ooo oor oot or- ora orc ore org orn oro orr ort oru ot- ota otc ote otg otn oto otr ott otu ou- oua ouc oue oun ouo our out ra- raa rac rae rag ran rao rar rat rau rca rcc rce rcg rcn rco rcr rct rcu re- rea rec ree reg ren reo rer ret reu rga rgc rge rgg rgn rgo rgr rgt rna rnc rng rnn rno rnr rnt rnu roa roc roe rog ron roo ror rot rou rra rrc rrg rrn rrr rrt rru rta rtc rte rtg rtn rto rtr rtt rtu rua ruc rue rug run ruo rur rut ruu taa tac tae tag tan tao tar tat tau tca tcc tce tcg tcn tco tcr tct tcu te- tea tec tee teg ten teo ter tet teu tga tgc tge tgg tgn tgo tgr tgt tgu tna tnc tne tng tnn tno tnr tnt to- toa toc toe tog ton too tor tot tou tra trc tre trg trn tro trr trt tru tta ttc tte ttg ttn tto ttr ttt ttu tua tuc tue tug tun tuo tur tut tuu ua- uaa uac uae uag uan uao uar uat uau uca ucc uce ucg ucn uco ucr uct ucu uea uec uee ueg uen uer uet uga ugc uge ugg ugn ugo ugr ugt ugu un- una unc une ung unn uno unr unt unu uoa uoc uoe uog uon uoo uor uot ur- ura urc ure urg urn uro urr urt uru uta utc ute utn uto utr utt utu uua uuc uue uug uun uur uut uuu