a-a a-c aaa aac aad aae aag aao aas ac- aca acc acd ace acg aco acs ad- ada adc add ade adg ado ads aea aec aed aee aeg aeo aes ag- aga agc agd age agg ago ags aoa aoc aod aoe aog aoo aos as- asa asc asd ase asg aso ass c-- caa cac cad cae cag cao cas cca ccc ccd cce ccg cco ccs cda cdc cdd cde cdg cdo cds ce- cea cec ced cee ceg ceo ces cga cgc cgd cge cgg cgo cgs co- coa coc cod coe cog coo cos csa csc csd cse csg cso css daa dac dad dae dag dao das dca dcc dcd dce dcg dco dcs dda ddc ddd dde ddg ddo dds de- dea dec ded dee deg deo des dga dgc dgd dge dgg dgs doa doc dod doe dog doo dos dsa dsc dsd dse dsg dso dss eaa eac ead eae eag eao eas ec- eca ecc ecd ece ecg eco ecs ed- eda edc edd ede edg edo eds eea eec eed eee eeg eeo ees ega egc egd ege egg ego egs eo- eoa eoc eod eoe eog eoo eos es- esa esc esd ese esg eso ess g-d gaa gac gad gae gag gao gas gca gcc gcd gce gcg gco gcs gda gdc gdd gde gdo gds ge- gea gec ged gee geg geo ges gga ggc ggd ggg ggo ggs goa goc god goe gog goo gos gsa gsc gsd gse gsg gso gss oaa oac oad oae oag oao oas oc- oca occ ocd ocg oco ocs oda odc odd ode odg odo ods oea oec oed oee oeg oeo oes oga ogc ogd oge ogg ogo ogs oo- ooa ooc ood oog ooo oos os- osa osc osd ose osg oso oss saa sac sad sae sag sao sas sca scc scd sce scg sco scs sda sdc sdd sde sdg sdo sds se- sea sec sed see seg seo ses sga sgc sgd sge sgg sgo sgs soa soc sod soe sog soo sos ss- ssa ssc ssd sse ssg sso sss