a-a aaa aaf aag aan aao aar aas aau af- afa aff afg afn afo afr afs afu ag- aga agf agg agn ago agr ags agu an- ana anf ang ann ano anr ans anu aoa aof aog aon aoo aor aos aou ar- ara arf arg arn aro arr ars aru as- asa asf asg asn aso asr ass asu au- aua auf aug aun auo aur aus faa faf fag fan fao far fas fau ffa fff ffg ffn ffo ffr ffs ffu fga fgf fgg fgn fgr fgs fna fnf fng fnn fnr fns fnu foa fof fog fon foo for fos fou fra frf frg frn fro frr frs fru fsa fsf fsg fsn fso fsr fss fsu fua fuf fug fun fuo fur fus fuu gaa gaf gag gan gao gar gas gau gfa gff gfo gfr gfs gga ggg ggn ggo ggr ggs ggu gna gnf gnn gno gnr gns gnu goa gof gog gon goo gor gos gou gra grf grg grn gro grr grs gru gsa gsf gsg gsn gso gsr gss gsu gu- gua guf gug gun guo gur gus guu naa naf nag nan nao nar nas nau nfa nff nfn nfo nfr nfs nfu nga ngf ngg ngn ngo ngs ngu nna nnf nng nnn nno nns nnu no- noa nof nog non noo nor nos nou nra nrf nrg nrn nro nrr nrs nru nsa nsf nsg nsn nso nsr nss nsu nua nug nun nuo nur nus nuu oaa oaf oag oan oao oar oas oau of- ofa off ofg ofn ofo ofr ofs ofu oga ogf ogg ogn ogo ogs on- ona onf ong onn ono onr ons onu oo- ooa oof oog oon ooo oor oos or- ora orf org orn oro orr ors oru os- osa osf osg osn oso osr oss osu ou- oua ouf oun ouo our ous ra- raa raf rag ran rao rar ras rau rfa rff rfg rfn rfo rfr rfs rfu rga rgf rgg rgn rgo rgr rgs rna rng rnn rno rnr rns rnu roa rof rog ron roo ror ros rou rra rrf rrg rrn rrr rrs rru rsa rsf rsg rsn rso rsr rss rsu rua ruf rug run ruo rur rus ruu saa saf sag san sao sar sas sau sfa sff sfg sfn sfo sfr sfs sfu sga sgf sgg sgn sgo sgr sgs sgu sna snf sng snn sno snr sns snu soa sof sog son soo sor sos sou sr- sra srf srg srn sro srr srs ss- ssa ssf ssg ssn sso ssr sss ssu sua suf sug sun suo sur sus suu ua- uaa uaf uag uan uao uar uas uau ufa uff ufg ufn ufo ufr ufs ufu uga ugf ugg ugn ugo ugr ugs ugu un- una unf ung unn uno unr uns unu uoa uog uon uoo uor uos ur- ura urf urg urn uro urr urs uru usa usf usg usn uso usr uss usu uua uug uun uur uus uuu