bbb bbg bbk bbn bbo bbr bbs bgb bgg bgk bgn bgo bgr bgs bkb bkg bkk bkn bko bkr bks bnb bng bnk bnn bno bnr bns bob bog bok bon boo bor bos brb brg brk brn bro brr brs bsb bsg bsk bsn bso bsr bss gbg gbk gbn gbo gbr gbs ggb ggg ggn ggo ggr ggs gkb gkn gko gks gnb gnn gno gnr gns gob gog gok gon goo gor gos grb grg grk grn gro grr grs gsb gsg gsk gsn gso gsr gss kbb kbk kbn kbo kbr kbs kgb kgo kgs kkb kkk kkn kkr kks kn- kng knk knn kno knr kob kog kok kon koo kor kos krg krk krn kro krr krs ksb ksg ksk ksn kso ksr kss nbb nbg nbk nbn nbo nbr nbs ngb ngg ngk ngn ngo ngs nkk nkn nko nkr nks nnb nng nnk nnn nno nns no- nob nog nok non noo nor nos nrb nrg nrk nrn nro nrr nrs nsb nsg nsk nsn nso nsr nss ob- obb obg obk obn obo obr obs ogg ogn ogo ogs okb okg okk oko okr oks on- onb ong onk onn ono onr ons oo- oob oog ook oon ooo oor oos or- orb org ork orn oro orr ors os- osb osg osk osn oso osr oss rbb rbg rbk rbn rbo rbr rbs rgb rgg rgk rgn rgo rgr rgs rkb rkg rkk rko rks rnb rng rnn rno rnr rns rob rog rok ron roo ror ros rrb rrg rrk rrn rrr rrs rsb rsg rsk rsn rso rsr rss sbb sbg sbk sbn sbo sbr sbs sgb sgg sgk sgn sgo sgr sgs sk- skb skg skk sko skr sks snb sng snk snn sno snr sns sob sog sok son soo sor sos sr- srb srg srk srn sro srr srs ss- ssb ssg ssk ssn sso ssr sss