a-a a-b a-i aaa aab aag aah aai aar aas ab- aba abb abg abh abi abr abs ag- aga agb agg agh agi agr ags aha ahb ahg ahh ahi ahr ahs ai- aia aib aig aih aii air ais ar- ara arb arg arh ari arr ars as- asa asb asg ash asi asr ass baa bab bag bah bai bar bas bba bbb bbg bbh bbi bbr bbs bga bgb bgg bgh bgi bgr bgs bha bhb bhg bhh bhi bhr bhs bi- bia bib big bih bii bir bis bra brb brg brh bri brr brs bsa bsb bsg bsh bsi bsr bss gaa gab gag gah gai gar gas gba gbg gbh gbi gbr gbs gga ggb ggg ggh ggi ggr ggs gha ghb ghg ghh ghi ghr ghs gia gib gig gih gii gir gis gra grb grg grh gri grr grs gsa gsb gsg gsi gsr gss h-i haa hab hag hah hai har has hba hbb hbg hbh hbi hbr hbs hga hgb hgg hgh hgi hgr hgs hha hhb hhg hhh hhi hhr hhs hia hib hig hih hii hir his hr- hra hrb hrg hrh hri hrr hrs hsa hsb hsg hsh hsi hsr hss ia- iaa iab iag iah iai iar ias iba ibb ibg ibh ibi ibr ibs iga igb igg igh igi igr igs iha ihb ihg ihh ihi ihr ihs iia iib iih iii iir iis ir- ira irb irg iri irr irs is- isa isb isg ish isi isr iss ra- raa rab rag rah rai rar ras rba rbb rbg rbh rbi rbr rbs rga rgb rgg rgh rgi rgr rgs rh- rha rhb rhg rhh rhi rhr rhs ria rib rig rih rii rir ris rra rrb rrg rrh rri rrr rrs rsa rsb rsg rsh rsi rsr rss saa sab sag sah sai sar sas sba sbb sbg sbh sbi sbr sbs sga sgb sgg sgh sgi sgr sgs sh- sha shb shg shh shi shr shs sia sib sig sih sii sir sis sr- sra srb srg srh sri srr srs ss- ssa ssb ssg ssh ssi ssr sss