-er a-a a-c aaa aac aae aag aam aan aao aar aas ac- aca acc ace acg acm acn aco acr acs aea aec aee aeg aem aen aeo aer aes ag- aga agc age agg agm agn ago agr ags ama amc ame amg amm amn amo amr ams an- ana anc ane ang anm ann ano anr ans aoa aoc aoe aog aom aon aoo aor aos ar- ara arc are arg arm arn aro arr ars as- asa asc ase asg asm asn aso asr ass c-- caa cac cae cag cam can cao car cas cca ccc cce ccg ccm ccn cco ccr ccs ce- cea cec cee ceg cem cen ceo cer ces cga cgc cge cgg cgm cgn cgo cgr cgs cma cmc cme cmg cmm cmn cmo cmr cms cn- cna cnc cne cng cnm cnn cno cnr cns co- coa coc coe cog com con coo cor cos cra crc cre crg crm crn cro crr crs csa csc cse csg csm csn cso csr css eaa eac eae eag eam ean eao ear eas ec- eca ecc ece ecg ecm ecn eco ecr ecs eea eec eee eeg eem een eeo eer ees ega egc ege egg egm egn ego egr egs em- ema emc eme emg emm emn emo emr ems en- ena enc ene eng enm enn eno enr ens eo- eoa eoc eoe eog eom eon eoo eor eos era erc ere erg erm ern ero err ers es- esa esc ese esg esm esn eso esr ess gaa gac gae gag gam gan gao gar gas gca gcc gce gcg gcm gcn gco gcr gcs ge- gea gec gee geg gem gen geo ger ges gga ggc ggg ggm ggn ggo ggr ggs gma gmc gme gmg gmm gmn gmo gmr gms gna gnc gne gnm gnn gno gnr gns goa goc goe gog gom gon goo gor gos gra grc gre grg grm grn gro grr grs gsa gsc gse gsg gsm gsn gso gsr gss m-o m-r maa mac mae mag mam man mao mar mas mc- mca mcc mce mcg mcm mcn mco mcr mcs mea mec mee meg mem men meo mer mes mga mgc mge mgm mgn mgo mgr mgs mma mmc mme mmg mmm mmn mmo mmr mms mna mnc mne mng mnm mnn mno mnr mns moa moc moe mog mom mon moo mor mos mra mrc mre mrg mrm mrn mro mrr mrs msa msc mse msg msm msn mso msr mss naa nac nae nag nam nan nao nar nas nca ncc nce ncg ncm ncn nco ncr ncs ne- nea nec nee neg nem nen neo ner nes nga ngc nge ngg ngm ngn ngo ngs nma nmc nme nmg nmm nmn nmo nmr nms nna nnc nne nng nnm nnn nno nns no- noa noc noe nog nom non noo nor nos nra nrc nre nrg nrm nrn nro nrr nrs nsa nsc nse nsg nsm nsn nso nsr nss oaa oac oae oag oam oan oao oar oas oc- oca occ ocg ocm ocn oco ocr ocs oea oec oee oeg oem oen oeo oer oes oga ogc oge ogg ogn ogo ogs om- oma omc ome omg omm omn omo omr oms on- ona onc one ong onn ono onr ons oo- ooa ooc oog oom oon ooo oor oos or- ora orc ore org orm orn oro orr ors os- osa osc ose osg osm osn oso osr oss ra- raa rac rae rag ram ran rao rar ras rca rcc rce rcg rcm rcn rco rcr rcs re- rea rec ree reg rem ren reo rer res rga rgc rge rgg rgn rgo rgr rgs rma rmc rme rmg rmm rmn rmo rmr rms rna rnc rng rnm rnn rno rnr rns roa roc roe rog rom ron roo ror ros rra rrc rrg rrm rrn rrr rrs rsa rsc rse rsg rsm rsn rso rsr rss saa sac sae sag sam san sao sar sas sca scc sce scg scm scn sco scr scs se- sea sec see seg sem sen seo ser ses sga sgc sge sgg sgm sgn sgo sgr sgs sma smc sme smg smm smn smo smr sms sna snc sne sng snm snn sno snr sns soa soc soe sog som son soo sor sos sr- sra src sre srg srm srn sro srr srs ss- ssa ssc sse ssg ssm ssn sso ssr sss