b-u bbb bbd bbh bbk bbn bbo bbu bdb bdd bdh bdk bdo bdu bhb bhd bhh bhk bho bhu bkb bkk bkn bko bnb bnd bnk bnn bno bnu bob bod boh bok bon boo bou bub bud buh buk bun buo buu dbb dbd dbh dbk dbn dbo dbu ddb ddd ddh ddk ddn ddo ddu dh- dhb dhd dhh dhk dho dhu dkb dkk dko dku dnb dnd dnh dnk dnn dno dob dod doh dok don doo dou dub dud duh duk dun duo hbb hbd hbh hbk hbn hbo hbu hdb hdd hdh hdk hdn hdo hdu hhb hhd hhh hhk hhn hho hhu hkb hkd hkh hkk hkn hko hku hnb hnd hnh hnk hnn hno hnu hob hod hoh hok hon hoo hou hub hud huh huk hun huo huu kbb kbd kbh kbk kbn kbo kbu kdb kdh kdk kdo kdu khh khk khn kho khu kkb kkh kkk kkn kku kn- knd knk knn kno knu kob kod koh kok kon koo kou kub kud kuh kuk kun kuu nbb nbd nbk nbn nbo nbu ndb ndd ndh ndk ndn ndo ndu nhb nhd nhh nhk nhn nhu nkk nkn nko nku nnb nnh nnk nnn nno nnu no- nob nod noh nok non noo nou nub nud nuh nuk nun nuo nuu ob- obb obd obh obk obn obo obu odb odd odh odn odo odu ohd ohh ohn oho ohu okb okd okk oko oku on- onb ond onh onk onn ono onu oo- oob ood ooh ook oon ooo ou- oud ouh ouk oun ouo ubb ubh ubk ubn ubo ubu udb udd udk udn udo udu uhb uhd uhh uho uhu ukb ukk ukn uku un- unb und unh unk unn uno unu uob uod uok uon uoo uun uuu