a-a a-b a-i aaa aab aag aai aao aar aas aau aay ab- aba abb abg abi abo abr abs abu aby ag- aga agb agg agi ago agr ags agu agy ai- aia aib aig aii aio air ais aiu aiy aoa aob aog aoi aoo aor aos aou ar- ara arb arg ari aro arr ars aru ary as- asa asb asg asi aso asr ass asu asy au- aua aub aug aui auo aur aus ay- aya ayi ayo ayr ays ayu b-u baa bab bag bai bao bar bas bau bay bba bbb bbg bbi bbo bbr bbs bbu bby bga bgb bgg bgi bgo bgr bgs bgu bi- bia bib big bii bio bir bis biu biy boa bob bog boi boo bor bos bou boy bra brb brg bri bro brr brs bru bry bsa bsb bsg bsi bso bsr bss bsu bsy bua bub bug bui buo bur bus buu buy by- bya byg byi byo byr bys byu gaa gab gag gai gao gar gas gau gay gba gbg gbi gbo gbr gbs gbu gby gga ggb ggg ggi ggo ggr ggs ggu gia gib gig gii gio gir gis giu giy goa gob gog goi goo gor gos gou goy gra grb grg gri gro grr grs gru gry gsa gsb gsg gsi gso gsr gss gsu gu- gua gub gug gui guo gur gus guu guy gy- gya gyb gyo gyr gys ia- iaa iab iag iai iao iar ias iau iba ibb ibg ibi ibo ibr ibs ibu iby iga igb igg igi igo igr igs igu igy iia iib iii iio iir iis iiu io- ioa iob iog ioi ioo ior ios iou ir- ira irb irg iri iro irr irs iru iry is- isa isb isg isi iso isr iss isu isy iu- iua iub iug iui iur ius iya iyo iyr iys iyy o-i oaa oab oag oai oao oar oas oau ob- oba obb obg obi obo obr obs obu oby oga ogg ogi ogo ogs ogy oia oib oii oio oir ois oiu oo- ooa oob oog ooi ooo oor oos or- ora orb org ori oro orr ors oru ory os- osa osb osg osi oso osr oss osu ou- oua oui ouo our ous oya oyi oyo oys ra- raa rab rag rai rao rar ras rau ray rba rbb rbg rbi rbo rbr rbs rbu rga rgb rgg rgi rgo rgr rgs ria rib rig rii rio rir ris riy roa rob rog roi roo ror ros rou roy rra rrb rrg rri rrr rrs rru rsa rsb rsg rsi rso rsr rss rsu rua rub rug rui ruo rur rus ruu ruy ry- rya ryg ryo ryr rys ryu ryy saa sab sag sai sao sar sas sau say sba sbb sbg sbi sbo sbr sbs sbu sby sga sgb sgg sgi sgo sgr sgs sgu sia sib sig sii sio sir sis siu soa sob sog soi soo sor sos sou soy sr- sra srb srg sri sro srr srs sry ss- ssa ssb ssg ssi sso ssr sss ssu sua sub sug sui suo sur sus suu suy sy- sya syb syg syi syr sys syu ua- uaa uab uag uai uao uar uas uau uay uba ubb ubg ubi ubo ubr ubs ubu uby uga ugb ugg ugi ugo ugr ugs ugu uia uib uig uii uio uir uis uiu uoa uob uog uoo uor uos ur- ura urb urg uri uro urr urs uru ury usa usb usg usi uso usr uss usu uua uug uur uus uuu uyi uyo uys uyu yaa yab yag yai yao yar yas yau yay ybg ybi ybr ybs yby yga ygo yig yii yio yir yis yob yog yoi yoo yor yos you yoy yra yrg yro yrs yru ysa ysb ysg ysi yso ysr yss ysu ysy yua yug yui yuo yur yus yuu yuy yyb yyg yys yyu yyy