b-u bbb bbg bbh bbk bbn bbo bbu bgb bgg bgh bgk bgn bgo bgu bhb bhg bhh bhk bho bhu bkb bkg bkk bkn bko bnb bng bnk bnn bno bnu bob bog boh bok bon boo bou bub bug buh buk bun buo buu gbg gbh gbk gbn gbo gbu ggb ggg ggh ggn ggo ggu ghb ghg ghh ghn gho gkb gkh gkn gko gnb gnn gno gnu gob gog goh gok gon goo gou gu- gub gug guk gun guo guu hbb hbg hbh hbk hbn hbo hbu hgb hgg hgh hgk hgn hgo hgu hhb hhg hhh hhk hhn hho hhu hkb hkg hkh hkk hkn hko hku hnb hng hnh hnk hnn hno hnu hob hog hoh hok hon hoo hou hub hug huh huk hun huo huu kbb kbh kbk kbn kbo kbu kgb kgh kgo kgu khh khk khn kho khu kkb kkh kkk kkn kku kn- kng knk knn kno knu kob kog koh kok kon koo kou kub kug kuh kuk kun kuu nbb nbg nbk nbn nbo nbu ngb ngg ngh ngk ngn ngo ngu nhb nhg nhh nhk nhn nhu nkk nkn nko nku nnb nng nnh nnk nnn nno nnu no- nob nog noh nok non noo nou nub nug nuh nuk nun nuo nuu ob- obb obg obh obk obn obo obu ogg ogh ogn ogo ohg ohh ohn oho ohu okb okg okk oko oku on- onb ong onh onk onn ono onu oo- oob oog ooh ook oon ooo ou- ouh ouk oun ouo ubb ubg ubh ubk ubn ubo ubu ugb ugg ugh ugk ugn ugo ugu uhb uhh uho uhu ukb ukk ukn uku un- unb ung unh unk unn uno unu uob uog uok uon uoo uug uun uuu