b-u bbb bbh bbo bbr bbs bbu bby bhb bhh bho bhr bhs bhu bob boh boo bor bos bou boy brb brh bro brr brs bru bry bsb bsh bso bsr bss bsu bsy bub buh buo bur bus buu buy by- byh byo byr bys byu hbb hbh hbo hbr hbs hbu hby hhb hhh hho hhr hhs hhu hhy hob hoh hoo hor hos hou hoy hr- hrb hrh hro hrr hrs hru hsb hsh hsr hss hsu hsy hub huh huo hur hus huu huy hy- hyb hyh hyo hyr hys hyy ob- obb obh obo obr obs obu oby ohh oho ohr ohs ohu oo- oob ooh ooo oor oos or- orb orh oro orr ors oru ory os- osb osh oso osr oss osu ou- ouh ouo our ous oyo oys rbb rbh rbo rbr rbs rbu rh- rhb rhh rho rhr rhs rhu rob roh roo ror ros rou roy rrb rrh rrr rrs rru rsb rsh rso rsr rss rsu rub ruh ruo rur rus ruu ruy ry- ryo ryr rys ryu ryy sbb sbh sbo sbr sbs sbu sby sh- shb shh sho shr shs shu shy sob soh soo sor sos sou soy sr- srb srh sro srr srs sry ss- ssb ssh sso ssr sss ssu sub suh suo sur sus suu suy sy- syb syh syr sys syu ubb ubh ubo ubr ubs ubu uby uhb uhh uho uhr uhs uhu uhy uob uoo uor uos ur- urb uro urr urs uru ury usb ush uso usr uss usu uur uus uuu uyo uys uyu ybr ybs yby yhs yhu yob yoo yor yos you yoy yro yrs yru ysb yso ysr yss ysu ysy yuh yuo yur yus yuu yuy yyb yys yyu yyy