b-u bbb bbg bbi bbk bbs bbu bby bgb bgg bgi bgk bgs bgu bi- bib big bii bik bis biu biy bkb bkg bkk bks bsb bsg bsi bsk bss bsu bsy bub bug bui buk bus buu buy by- byg byi byk bys byu gbg gbi gbk gbs gbu gby ggb ggg ggi ggs ggu gib gig gii gik gis giu giy gkb gks gsb gsg gsi gsk gss gsu gu- gub gug gui guk gus guu guy gy- gyb gys ibb ibg ibi ibk ibs ibu iby igb igg igi igk igs igu igy iib iii iis iiu ikb iki ikk iks iku is- isb isg isi isk iss isu isy iu- iub iug iui ius iys iyy kbb kbi kbk kbs kbu kgb kgi kgs kgu kgy kib kig kii kik kis kiu kkb kki kkk kks kku kky ksb ksg ksi ksk kss ksu kub kug kui kuk kus kuu kuy kys kyu sbb sbg sbi sbk sbs sbu sby sgb sgg sgi sgk sgs sgu sib sig sii sik sis siu sk- skb skg ski skk sks sku sky ss- ssb ssg ssi ssk sss ssu sub sug sui suk sus suu suy sy- syb syg syi syk sys syu ubb ubg ubi ubk ubs ubu uby ugb ugg ugi ugk ugs ugu uib uig uii uis uiu ukb uki ukk uku usb usg usi usk uss usu uug uus uuu uyi uys uyu ybg ybi ybs yby yig yii yis yki ykk ysb ysg ysi ysk yss ysu ysy yug yui yuk yus yuu yuy yyb yyg yys yyu yyy