-ol b-u bbb bbd bbk bbl bbn bbo bbu bdb bdd bdk bdl bdo bdu bkb bkk bkl bkn bko blb bld blk bll bln blo blu bnb bnd bnk bnl bnn bno bnu bob bod bok bol bon boo bou bub bud buk bul bun buo buu dbb dbd dbk dbl dbn dbo dbu ddb ddd ddk ddl ddn ddo ddu dkb dkk dkl dko dku dl- dlb dld dlk dll dlo dlu dnb dnd dnk dnl dnn dno dob dod dok dol don doo dou dub dud duk dul dun duo kbb kbd kbk kbl kbn kbo kbu kdb kdk kdl kdo kdu kkb kkk kkl kkn kku kl- klb kld klo klu kn- knd knk knl knn kno knu kob kod kok kol kon koo kou kub kud kuk kul kun kuu lbb lbd lbk lbl lbo lbu ldb ldd ldk ldl ldn ldo ldu lkb lkl llb lld llk lll lln llo llu lnb lnd lnk lnl lnn lno lnu lob lod lok lol lon loo lou lub lud luk lul lun luo luu nbb nbd nbk nbl nbn nbo nbu ndb ndd ndk ndl ndn ndo ndu nkk nkn nko nku nlb nld nlk nll nln nlo nlu nnb nnk nnl nnn nno nnu no- nob nod nok nol non noo nou nub nud nuk nul nun nuo nuu ob- obb obd obk obl obn obo obu odb odd odl odn odo odu okb okd okk okl oko oku olb old olk oll oln olo olu on- onb ond onk onl onn ono onu oo- oob ood ook ool oon ooo ou- oud ouk oul oun ouo ubb ubk ubl ubn ubo ubu udb udd udk udl udn udo udu ukb ukk ukl ukn uku ulb uld ulk ull uln ulo ulu un- unb und unk unl unn uno unu uob uod uok uol uon uoo uun uuu