a-a a-c aaa aac aae aaf aag aam aao aas ac- aca acc ace acf acg acm aco acs aea aec aee aef aeg aem aeo aes af- afa afc afe aff afg afm afo afs ag- aga agc age agf agg agm ago ags ama amc ame amf amg amm amo ams aoa aoc aoe aof aog aom aoo aos as- asa asc ase asf asg asm aso ass c-- caa cac cae caf cag cam cao cas cca ccc cce ccf ccg ccm cco ccs ce- cea cec cee cef ceg cem ceo ces cfa cfc cfe cff cfg cfm cfo cfs cga cgc cge cgg cgm cgo cgs cma cmc cme cmf cmg cmm cmo cms co- coa coc coe cof cog com coo cos csa csc cse csf csg csm cso css eaa eac eae eaf eag eam eao eas ec- eca ecc ece ecf ecg ecm eco ecs eea eec eee eef eeg eem eeo ees ef- efa efc efe eff efg efm efo efs ega egc ege egf egg egm ego egs em- ema emc eme emf emg emm emo ems eo- eoa eoc eoe eof eog eom eoo eos es- esa esc ese esf esg esm eso ess faa fac fae faf fag fam fao fas fca fcc fce fcf fcg fcm fco fcs fea fec fee fef feg fem feo fes ffa ffc ffe fff ffg ffm ffo ffs fga fgc fge fgf fgg fgm fgs fma fmc fme fmf fmg fmm fmo fms foa foc foe fof fog fom foo fos fsa fsc fse fsf fsg fsm fso fss gaa gac gae gaf gag gam gao gas gca gcc gce gcf gcg gcm gco gcs ge- gea gec gee gef geg gem geo ges gfa gfc gfe gff gfm gfo gfs gga ggc ggg ggm ggo ggs gma gmc gme gmf gmg gmm gmo gms goa goc goe gof gog gom goo gos gsa gsc gse gsf gsg gsm gso gss m-f m-o maa mac mae maf mag mam mao mas mc- mca mcc mce mcf mcg mcm mco mcs mea mec mee mef meg mem meo mes mfa mfc mfe mff mfg mfm mfo mfs mga mgc mge mgf mgm mgo mgs mma mmc mme mmf mmg mmm mmo mms moa moc moe mof mog mom moo mos msa msc mse msf msg msm mso mss oaa oac oae oaf oag oam oao oas oc- oca occ ocf ocg ocm oco ocs oea oec oee oef oeg oem oeo oes of- ofa ofc ofe off ofg ofm ofo ofs oga ogc oge ogf ogg ogo ogs om- oma omc ome omf omg omm omo oms oo- ooa ooc oof oog oom ooo oos os- osa osc ose osf osg osm oso oss saa sac sae saf sag sam sao sas sca scc sce scf scg scm sco scs se- sea sec see sef seg sem seo ses sfa sfc sfe sff sfg sfm sfo sfs sga sgc sge sgf sgg sgm sgo sgs sma smc sme smf smg smm smo sms soa soc soe sof sog som soo sos ss- ssa ssc sse ssf ssg ssm sso sss