a-a aaa aaf aag aah aao aar aas af- afa aff afg afh afo afr afs ag- aga agf agg agh ago agr ags aha ahf ahg ahh aho ahr ahs aoa aof aog aoh aoo aor aos ar- ara arf arg arh aro arr ars as- asa asf asg ash aso asr ass faa faf fag fah fao far fas ffa fff ffg ffh ffo ffr ffs fga fgf fgg fgh fgr fgs fha fhf fhg fhh fho fhr fhs foa fof fog foh foo for fos fra frf frg frh fro frr frs fsa fsf fsg fsh fso fsr fss gaa gaf gag gah gao gar gas gfa gff gfh gfo gfr gfs gga ggg ggh ggo ggr ggs gha ghg ghh gho ghr ghs goa gof gog goh goo gor gos gra grf grg grh gro grr grs gsa gsf gsg gso gsr gss haa haf hag hah hao har has hfa hff hfg hfh hfo hfr hfs hga hgf hgg hgh hgo hgr hgs hha hhf hhg hhh hho hhr hhs hoa hof hog hoh hoo hor hos hr- hra hrf hrg hrh hro hrr hrs hsa hsf hsg hsh hsr hss oaa oaf oag oah oao oar oas of- ofa off ofg ofo ofr ofs oga ogf ogg ogh ogo ogs oha ohf ohg ohh oho ohr ohs oo- ooa oof oog ooh ooo oor oos or- ora orf org orh oro orr ors os- osa osf osg osh oso osr oss ra- raa raf rag rah rao rar ras rfa rff rfg rfh rfo rfr rfs rga rgf rgg rgh rgo rgr rgs rh- rha rhf rhg rhh rho rhr rhs roa rof rog roh roo ror ros rra rrf rrg rrh rrr rrs rsa rsf rsg rsh rso rsr rss saa saf sag sah sao sar sas sfa sff sfg sfh sfo sfr sfs sga sgf sgg sgh sgo sgr sgs sh- sha shf shg shh sho shr shs soa sof sog soh soo sor sos sr- sra srf srg srh sro srr srs ss- ssa ssf ssg ssh sso ssr sss