a-a a-b a-i aaa aab aag aah aai aao aar aas ab- aba abb abg abh abi abo abr abs ag- aga agb agg agh agi ago agr ags aha ahb ahg ahh ahi aho ahr ahs ai- aia aib aig aih aii aio air ais aoa aob aog aoh aoi aoo aor aos ar- ara arb arg arh ari aro arr ars as- asa asb asg ash asi aso asr ass baa bab bag bah bai bao bar bas bba bbb bbg bbh bbi bbo bbr bbs bga bgb bgg bgh bgi bgo bgr bgs bha bhb bhg bhh bhi bho bhr bhs bi- bia bib big bih bii bio bir bis boa bob bog boh boi boo bor bos bra brb brg brh bri bro brr brs bsa bsb bsg bsh bsi bso bsr bss gaa gab gag gah gai gao gar gas gba gbg gbh gbi gbo gbr gbs gga ggb ggg ggh ggi ggo ggr ggs gha ghb ghg ghh ghi gho ghr ghs gia gib gig gih gii gio gir gis goa gob gog goh goi goo gor gos gra grb grg grh gri gro grr grs gsa gsb gsg gsi gso gsr gss h-i haa hab hag hah hai hao har has hba hbb hbg hbh hbi hbo hbr hbs hga hgb hgg hgh hgi hgo hgr hgs hha hhb hhg hhh hhi hho hhr hhs hia hib hig hih hii hio hir his hoa hob hog hoh hoi hoo hor hos hr- hra hrb hrg hrh hri hro hrr hrs hsa hsb hsg hsh hsi hsr hss ia- iaa iab iag iah iai iao iar ias iba ibb ibg ibh ibi ibo ibr ibs iga igb igg igh igi igo igr igs iha ihb ihg ihh ihi iho ihr ihs iia iib iih iii iio iir iis io- ioa iob iog ioh ioi ioo ior ios ir- ira irb irg iri iro irr irs is- isa isb isg ish isi iso isr iss o-i oaa oab oag oah oai oao oar oas ob- oba obb obg obh obi obo obr obs oga ogg ogh ogi ogo ogs oha ohg ohh ohi oho ohr ohs oia oib oii oio oir ois oo- ooa oob oog ooh ooi ooo oor oos or- ora orb org orh ori oro orr ors os- osa osb osg osh osi oso osr oss ra- raa rab rag rah rai rao rar ras rba rbb rbg rbh rbi rbo rbr rbs rga rgb rgg rgh rgi rgo rgr rgs rh- rha rhb rhg rhh rhi rho rhr rhs ria rib rig rih rii rio rir ris roa rob rog roh roi roo ror ros rra rrb rrg rrh rri rrr rrs rsa rsb rsg rsh rsi rso rsr rss saa sab sag sah sai sao sar sas sba sbb sbg sbh sbi sbo sbr sbs sga sgb sgg sgh sgi sgo sgr sgs sh- sha shb shg shh shi sho shr shs sia sib sig sih sii sio sir sis soa sob sog soh soi soo sor sos sr- sra srb srg srh sri sro srr srs ss- ssa ssb ssg ssh ssi sso ssr sss