a-a aaa aaf aag aah aan aao aar aas af- afa aff afg afh afn afo afr afs ag- aga agf agg agh agn ago agr ags aha ahf ahg ahh ahn aho ahr ahs an- ana anf ang anh ann ano anr ans aoa aof aog aoh aon aoo aor aos ar- ara arf arg arh arn aro arr ars as- asa asf asg ash asn aso asr ass faa faf fag fah fan fao far fas ffa fff ffg ffh ffn ffo ffr ffs fga fgf fgg fgh fgn fgr fgs fha fhf fhg fhh fhn fho fhr fhs fna fnf fng fnh fnn fnr fns foa fof fog foh fon foo for fos fra frf frg frh frn fro frr frs fsa fsf fsg fsh fsn fso fsr fss gaa gaf gag gah gan gao gar gas gfa gff gfh gfo gfr gfs gga ggg ggh ggn ggo ggr ggs gha ghg ghh ghn gho ghr ghs gna gnf gnn gno gnr gns goa gof gog goh gon goo gor gos gra grf grg grh grn gro grr grs gsa gsf gsg gsn gso gsr gss haa haf hag hah han hao har has hfa hff hfg hfh hfn hfo hfr hfs hga hgf hgg hgh hgn hgo hgr hgs hha hhf hhg hhh hhn hho hhr hhs hna hnf hng hnh hnn hno hns hoa hof hog hoh hon hoo hor hos hr- hra hrf hrg hrh hrn hro hrr hrs hsa hsf hsg hsh hsn hsr hss naa naf nag nah nan nao nar nas nfa nff nfn nfo nfr nfs nga ngf ngg ngh ngn ngo ngs nha nhf nhg nhh nhn nhr nhs nna nnf nng nnh nnn nno nns no- noa nof nog noh non noo nor nos nra nrf nrg nrn nro nrr nrs nsa nsf nsg nsh nsn nso nsr nss oaa oaf oag oah oan oao oar oas of- ofa off ofg ofn ofo ofr ofs oga ogf ogg ogh ogn ogo ogs oha ohf ohg ohh ohn oho ohr ohs on- ona onf ong onh onn ono onr ons oo- ooa oof oog ooh oon ooo oor oos or- ora orf org orh orn oro orr ors os- osa osf osg osh osn oso osr oss ra- raa raf rag rah ran rao rar ras rfa rff rfg rfh rfn rfo rfr rfs rga rgf rgg rgh rgn rgo rgr rgs rh- rha rhf rhg rhh rhn rho rhr rhs rna rng rnh rnn rno rnr rns roa rof rog roh ron roo ror ros rra rrf rrg rrh rrn rrr rrs rsa rsf rsg rsh rsn rso rsr rss saa saf sag sah san sao sar sas sfa sff sfg sfh sfn sfo sfr sfs sga sgf sgg sgh sgn sgo sgr sgs sh- sha shf shg shh shn sho shr shs sna snf sng snn sno snr sns soa sof sog soh son soo sor sos sr- sra srf srg srh srn sro srr srs ss- ssa ssf ssg ssh ssn sso ssr sss