-ey a-a a-c aaa aac aae aag aao aas aay ac- aca acc ace acg aco acs acy aea aec aee aeg aeo aes aey ag- aga agc age agg ago ags agy aoa aoc aoe aog aoo aos as- asa asc ase asg aso ass asy ay- aya ayc aye ayo ays c-- caa cac cae cag cao cas cay cca ccc cce ccg cco ccs ce- cea cec cee ceg ceo ces cey cga cgc cge cgg cgo cgs cgy co- coa coc coe cog coo cos coy csa csc cse csg cso css csy cya cyc cye cyg cyo cys eaa eac eae eag eao eas ec- eca ecc ece ecg eco ecs eea eec eee eeg eeo ees eey ega egc ege egg ego egs egy eo- eoa eoc eoe eog eoo eos es- esa esc ese esg eso ess esy eya eyc eye eyo eys gaa gac gae gag gao gas gay gca gcc gce gcg gco gcs ge- gea gec gee geg geo ges gey gga ggc ggg ggo ggs goa goc goe gog goo gos goy gsa gsc gse gsg gso gss gy- gya gye gyo gys oaa oac oae oag oao oas oc- oca occ ocg oco ocs oea oec oee oeg oeo oes oey oga ogc oge ogg ogo ogs ogy oo- ooa ooc oog ooo oos os- osa osc ose osg oso oss oya oye oyo oys saa sac sae sag sao sas say sca scc sce scg sco scs se- sea sec see seg seo ses sey sga sgc sge sgg sgo sgs soa soc soe sog soo sos soy ss- ssa ssc sse ssg sso sss sy- sya syc sye syg sys yaa yac yae yag yao yas yay yca ycc yce yco ycs ycy yea yec yee yeg yeo yes yey yga ygc ygo yoc yoe yog yoo yos yoy ysa ysc yse ysg yso yss ysy yyc yye yyg yys yyy