a-a a-c aaa aac aad aae aaf aag aao aas ac- aca acc acd ace acf acg aco acs ad- ada adc add ade adf adg ado ads aea aec aed aee aef aeg aeo aes af- afa afc afd afe aff afg afo afs ag- aga agc agd age agf agg ago ags aoa aoc aod aoe aof aog aoo aos as- asa asc asd ase asf asg aso ass c-- caa cac cad cae caf cag cao cas cca ccc ccd cce ccf ccg cco ccs cda cdc cdd cde cdf cdg cdo cds ce- cea cec ced cee cef ceg ceo ces cfa cfc cfd cfe cff cfg cfo cfs cga cgc cgd cge cgg cgo cgs co- coa coc cod coe cof cog coo cos csa csc csd cse csf csg cso css daa dac dad dae daf dag dao das dca dcc dcd dce dcf dcg dco dcs dda ddc ddd dde ddf ddg ddo dds de- dea dec ded dee def deg deo des dfa dfc dfd dfe dff dfg dfo dfs dga dgc dgd dge dgf dgg dgs doa doc dod doe dof dog doo dos dsa dsc dsd dse dsf dsg dso dss eaa eac ead eae eaf eag eao eas ec- eca ecc ecd ece ecf ecg eco ecs ed- eda edc edd ede edf edg edo eds eea eec eed eee eef eeg eeo ees ef- efa efc efd efe eff efg efo efs ega egc egd ege egf egg ego egs eo- eoa eoc eod eoe eof eog eoo eos es- esa esc esd ese esf esg eso ess faa fac fad fae faf fag fao fas fca fcc fcd fce fcf fcg fco fcs fda fdc fdd fde fdf fdg fdo fds fea fec fed fee fef feg feo fes ffa ffc ffd ffe fff ffg ffo ffs fga fgc fgd fge fgf fgg fgs foa foc foe fof fog foo fos fsa fsc fsd fse fsf fsg fso fss g-d gaa gac gad gae gaf gag gao gas gca gcc gcd gce gcf gcg gco gcs gda gdc gdd gde gdf gdo gds ge- gea gec ged gee gef geg geo ges gfa gfc gfd gfe gff gfo gfs gga ggc ggd ggg ggo ggs goa goc god goe gof gog goo gos gsa gsc gsd gse gsf gsg gso gss oaa oac oad oae oaf oag oao oas oc- oca occ ocd ocf ocg oco ocs oda odc odd ode odf odg odo ods oea oec oed oee oef oeg oeo oes of- ofa ofc ofd ofe off ofg ofo ofs oga ogc ogd oge ogf ogg ogo ogs oo- ooa ooc ood oof oog ooo oos os- osa osc osd ose osf osg oso oss saa sac sad sae saf sag sao sas sca scc scd sce scf scg sco scs sda sdc sdd sde sdf sdg sdo sds se- sea sec sed see sef seg seo ses sfa sfc sfd sfe sff sfg sfo sfs sga sgc sgd sge sgf sgg sgo sgs soa soc sod soe sof sog soo sos ss- ssa ssc ssd sse ssf ssg sso sss