-er a-a a-c a-t aaa aac aae aag aam aan aao aar aat ac- aca acc ace acg acm acn aco acr act aea aec aee aeg aem aen aeo aer aet ag- aga agc age agg agm agn ago agr agt ama amc ame amg amm amn amo amr amt an- ana anc ane ang anm ann ano anr ant aoa aoc aoe aog aom aon aoo aor aot ar- ara arc are arg arm arn aro arr art at- ata atc ate atg atm atn ato atr att c-- caa cac cae cag cam can cao car cat cca ccc cce ccg ccm ccn cco ccr cct ce- cea cec cee ceg cem cen ceo cer cet cga cgc cge cgg cgm cgn cgo cgr cgt cma cmc cme cmg cmm cmn cmo cmr cmt cn- cna cnc cne cng cnm cnn cno cnr cnt co- coa coc coe cog com con coo cor cot cra crc cre crg crm crn cro crr crt cta ctc cte ctg ctm ctn cto ctr ctt eaa eac eae eag eam ean eao ear eat ec- eca ecc ece ecg ecm ecn eco ecr ect eea eec eee eeg eem een eeo eer eet ega egc ege egg egm egn ego egr egt em- ema emc eme emg emm emn emo emr emt en- ena enc ene eng enm enn eno enr ent eo- eoa eoc eoe eog eom eon eoo eor eot era erc ere erg erm ern ero err ert eta etc ete etg etm etn eto etr ett gaa gac gae gag gam gan gao gar gat gca gcc gce gcg gcm gcn gco gcr gct ge- gea gec gee geg gem gen geo ger get gga ggc ggg ggm ggn ggo ggr ggt gma gmc gme gmg gmm gmn gmo gmr gmt gna gnc gne gnm gnn gno gnr gnt goa goc goe gog gom gon goo gor got gra grc gre grg grm grn gro grr grt gta gtc gte gtg gtm gtn gto gtr gtt m-o m-r maa mac mae mag mam man mao mar mat mc- mca mcc mce mcg mcm mcn mco mcr mct mea mec mee meg mem men meo mer met mga mgc mge mgm mgn mgo mgr mgt mma mmc mme mmg mmm mmn mmo mmr mmt mna mnc mne mng mnm mnn mno mnr mnt moa moc moe mog mom mon moo mor mot mra mrc mre mrg mrm mrn mro mrr mrt mta mtc mte mtg mtm mtn mto mtr mtt naa nac nae nag nam nan nao nar nat nca ncc nce ncg ncm ncn nco ncr nct ne- nea nec nee neg nem nen neo ner net nga ngc nge ngg ngm ngn ngo ngt nma nmc nme nmg nmm nmn nmo nmr nmt nna nnc nne nng nnm nnn nno nnt no- noa noc noe nog nom non noo nor not nra nrc nre nrg nrm nrn nro nrr nrt nta ntc nte ntg ntm ntn nto ntr ntt oaa oac oae oag oam oan oao oar oat oc- oca occ ocg ocm ocn oco ocr oct oea oec oee oeg oem oen oeo oer oet oga ogc oge ogg ogn ogo ogt om- oma omc ome omg omm omn omo omr omt on- ona onc one ong onn ono onr ont oo- ooa ooc oog oom oon ooo oor oot or- ora orc ore org orm orn oro orr ort ot- ota otc ote otg otm otn oto otr ott ra- raa rac rae rag ram ran rao rar rat rca rcc rce rcg rcm rcn rco rcr rct re- rea rec ree reg rem ren reo rer ret rga rgc rge rgg rgn rgo rgr rgt rma rmc rme rmg rmm rmn rmo rmr rmt rna rnc rng rnm rnn rno rnr rnt roa roc roe rog rom ron roo ror rot rra rrc rrg rrm rrn rrr rrt rta rtc rte rtg rtm rtn rto rtr rtt taa tac tae tag tam tan tao tar tat tca tcc tce tcg tcm tcn tco tcr tct te- tea tec tee teg tem ten teo ter tet tga tgc tge tgg tgm tgn tgo tgr tgt tma tmc tme tmg tmm tmn tmo tmr tmt tna tnc tne tng tnm tnn tno tnr tnt to- toa toc toe tog tom ton too tor tot tra trc tre trg trm trn tro trr trt tta ttc tte ttg ttm ttn tto ttr ttt