-er a-a a-c a-t aaa aac aae aag aam aao aap aar aat ac- aca acc ace acg acm aco acp acr act aea aec aee aeg aem aeo aep aer aet ag- aga agc age agg agm ago agp agr agt ama amc ame amg amm amo amp amr amt aoa aoc aoe aog aom aoo aop aor aot ap- apa apc ape apg apm apo app apr apt ar- ara arc are arg arm aro arp arr art at- ata atc ate atg atm ato atp atr att c-- caa cac cae cag cam cao cap car cat cca ccc cce ccg ccm cco ccp ccr cct ce- cea cec cee ceg cem ceo cep cer cet cga cgc cge cgg cgm cgo cgp cgr cgt cma cmc cme cmg cmm cmo cmp cmr cmt co- coa coc coe cog com coo cop cor cot cpa cpc cpe cpg cpm cpo cpp cpr cpt cra crc cre crg crm cro crp crr crt cta ctc cte ctg ctm cto ctp ctr ctt eaa eac eae eag eam eao eap ear eat ec- eca ecc ece ecg ecm eco ecr ect eea eec eee eeg eem eeo eep eer eet ega egc ege egg egm ego egp egr egt em- ema emc eme emg emm emo emp emr emt eo- eoa eoc eoe eog eom eoo eop eor eot ep- epa epc epe epg epm epo epp epr ept era erc ere erg erm ero erp err ert eta etc ete etg etm eto etp etr ett g-p gaa gac gae gag gam gao gap gar gat gca gcc gce gcg gcm gco gcp gcr gct ge- gea gec gee geg gem geo gep ger get gga ggc ggg ggm ggo ggp ggr ggt gma gmc gme gmg gmm gmo gmp gmr gmt goa goc goe gog gom goo gop gor got gpa gpc gpe gpg gpm gpo gpp gpr gpt gra grc gre grg grm gro grp grr grt gta gtc gte gtg gtm gto gtp gtr gtt m-o m-r maa mac mae mag mam mao map mar mat mc- mca mcc mce mcg mcm mco mcp mcr mct mea mec mee meg mem meo mep mer met mga mgc mge mgm mgo mgp mgr mgt mma mmc mme mmg mmm mmo mmp mmr mmt moa moc moe mog mom moo mop mor mot mpa mpc mpe mpg mpm mpo mpp mpr mpt mra mrc mre mrg mrm mro mrp mrr mrt mta mtc mte mtg mtm mto mtp mtr mtt oaa oac oae oag oam oao oap oar oat oc- oca occ ocg ocm oco ocp ocr oct oea oec oee oeg oem oeo oep oer oet oga ogc oge ogg ogo ogp ogt om- oma omc ome omg omm omo omp omr omt oo- ooa ooc oog oom ooo oop oor oot op- opa opc ope opg opm opo opp opr opt or- ora orc ore org orm oro orp orr ort ot- ota otc ote otg otm oto otp otr ott p-p paa pac pae pag pam pao pap par pat pca pcc pce pcg pcm pco pcp pcr pct pea pec pee peg pem peo pep per pet pga pgc pge pgg pgm pgo pgp pgr pgt pma pmc pme pmg pmm pmo pmp pmr pmt poa poc poe pog pom poo pop por pot ppa ppc ppe ppg ppm ppo ppp ppr ppt pra prc pre prg prm pro prp prr prt pt- pta ptc pte ptg ptm pto ptp ptr ptt ra- raa rac rae rag ram rao rap rar rat rca rcc rce rcg rcm rco rcp rcr rct re- rea rec ree reg rem reo rep rer ret rga rgc rge rgg rgo rgp rgr rgt rma rmc rme rmg rmm rmo rmp rmr rmt roa roc roe rog rom roo rop ror rot rpa rpc rpe rpg rpm rpo rpp rpr rpt rra rrc rrg rrm rrp rrr rrt rta rtc rte rtg rtm rto rtp rtr rtt taa tac tae tag tam tao tap tar tat tca tcc tce tcg tcm tco tcp tcr tct te- tea tec tee teg tem teo tep ter tet tga tgc tge tgg tgm tgo tgp tgr tgt tma tmc tme tmg tmm tmo tmp tmr tmt to- toa toc toe tog tom too top tor tot tpa tpc tpe tpg tpm tpo tpp tpr tpt tra trc tre trg trm tro trp trr trt tta ttc tte ttg ttm tto ttp ttr ttt