b-u bbb bbg bbn bbo bbr bbs bbu bby bgb bgg bgn bgo bgr bgs bgu bnb bng bnn bno bnr bns bnu bob bog bon boo bor bos bou boy brb brg brn bro brr brs bru bry bsb bsg bsn bso bsr bss bsu bsy bub bug bun buo bur bus buu buy by- byg byn byo byr bys byu gbg gbn gbo gbr gbs gbu gby ggb ggg ggn ggo ggr ggs ggu gnb gnn gno gnr gns gnu gob gog gon goo gor gos gou goy grb grg grn gro grr grs gru gry gsb gsg gsn gso gsr gss gsu gu- gub gug gun guo gur gus guu guy gy- gyb gyn gyo gyr gys nbb nbg nbn nbo nbr nbs nbu ngb ngg ngn ngo ngs ngu nnb nng nnn nno nns nnu no- nob nog non noo nor nos nou noy nrb nrg nrn nro nrr nrs nru nry nsb nsg nsn nso nsr nss nsu nsy nub nug nun nuo nur nus nuu nuy nyg nyn nyo nys nyu nyy ob- obb obg obn obo obr obs obu oby ogg ogn ogo ogs ogy on- onb ong onn ono onr ons onu ony oo- oob oog oon ooo oor oos or- orb org orn oro orr ors oru ory os- osb osg osn oso osr oss osu ou- oun ouo our ous oyo oys rbb rbg rbn rbo rbr rbs rbu rgb rgg rgn rgo rgr rgs rnb rng rnn rno rnr rns rnu rny rob rog ron roo ror ros rou roy rrb rrg rrn rrr rrs rru rsb rsg rsn rso rsr rss rsu rub rug run ruo rur rus ruu ruy ry- ryg ryn ryo ryr rys ryu ryy sbb sbg sbn sbo sbr sbs sbu sby sgb sgg sgn sgo sgr sgs sgu snb sng snn sno snr sns snu sny sob sog son soo sor sos sou soy sr- srb srg srn sro srr srs sry ss- ssb ssg ssn sso ssr sss ssu sub sug sun suo sur sus suu suy sy- syb syg syn syr sys syu ubb ubg ubn ubo ubr ubs ubu uby ugb ugg ugn ugo ugr ugs ugu un- unb ung unn uno unr uns unu uny uob uog uon uoo uor uos ur- urb urg urn uro urr urs uru ury usb usg usn uso usr uss usu uug uun uur uus uuu uyo uys uyu ybg ybr ybs yby ygo yng ynn yns ynu yny yob yog yon yoo yor yos you yoy yrg yrn yro yrs yru ysb ysg yso ysr yss ysu ysy yug yun yuo yur yus yuu yuy yyb yyg yys yyu yyy