-er a-a a-c a-t aaa aac aae aag aam aao aar aat ac- aca acc ace acg acm aco acr act aea aec aee aeg aem aeo aer aet ag- aga agc age agg agm ago agr agt ama amc ame amg amm amo amr amt aoa aoc aoe aog aom aoo aor aot ar- ara arc are arg arm aro arr art at- ata atc ate atg atm ato atr att c-- caa cac cae cag cam cao car cat cca ccc cce ccg ccm cco ccr cct ce- cea cec cee ceg cem ceo cer cet cga cgc cge cgg cgm cgo cgr cgt cma cmc cme cmg cmm cmo cmr cmt co- coa coc coe cog com coo cor cot cra crc cre crg crm cro crr crt cta ctc cte ctg ctm cto ctr ctt eaa eac eae eag eam eao ear eat ec- eca ecc ece ecg ecm eco ecr ect eea eec eee eeg eem eeo eer eet ega egc ege egg egm ego egr egt em- ema emc eme emg emm emo emr emt eo- eoa eoc eoe eog eom eoo eor eot era erc ere erg erm ero err ert eta etc ete etg etm eto etr ett gaa gac gae gag gam gao gar gat gca gcc gce gcg gcm gco gcr gct ge- gea gec gee geg gem geo ger get gga ggc ggg ggm ggo ggr ggt gma gmc gme gmg gmm gmo gmr gmt goa goc goe gog gom goo gor got gra grc gre grg grm gro grr grt gta gtc gte gtg gtm gto gtr gtt m-o m-r maa mac mae mag mam mao mar mat mc- mca mcc mce mcg mcm mco mcr mct mea mec mee meg mem meo mer met mga mgc mge mgm mgo mgr mgt mma mmc mme mmg mmm mmo mmr mmt moa moc moe mog mom moo mor mot mra mrc mre mrg mrm mro mrr mrt mta mtc mte mtg mtm mto mtr mtt oaa oac oae oag oam oao oar oat oc- oca occ ocg ocm oco ocr oct oea oec oee oeg oem oeo oer oet oga ogc oge ogg ogo ogt om- oma omc ome omg omm omo omr omt oo- ooa ooc oog oom ooo oor oot or- ora orc ore org orm oro orr ort ot- ota otc ote otg otm oto otr ott ra- raa rac rae rag ram rao rar rat rca rcc rce rcg rcm rco rcr rct re- rea rec ree reg rem reo rer ret rga rgc rge rgg rgo rgr rgt rma rmc rme rmg rmm rmo rmr rmt roa roc roe rog rom roo ror rot rra rrc rrg rrm rrr rrt rta rtc rte rtg rtm rto rtr rtt taa tac tae tag tam tao tar tat tca tcc tce tcg tcm tco tcr tct te- tea tec tee teg tem teo ter tet tga tgc tge tgg tgm tgo tgr tgt tma tmc tme tmg tmm tmo tmr tmt to- toa toc toe tog tom too tor tot tra trc tre trg trm tro trr trt tta ttc tte ttg ttm tto ttr ttt