b-u bbb bbi bbk bbl bbn bbs bbu bi- bib bii bik bil bin bis biu bkb bkk bkl bkn bks blb bli blk bll bln bls blu bnb bni bnk bnl bnn bns bnu bsb bsi bsk bsl bsn bss bsu bub bui buk bul bun bus buu ibb ibi ibk ibl ibn ibs ibu iib iii iil iin iis iiu ikb iki ikk ikl iks iku il- ilb ili ilk ill iln ils ilu in- inb ini ink inl inn ins inu is- isb isi isk isl isn iss isu iu- iub iui ius kbb kbi kbk kbl kbn kbs kbu kib kii kik kil kin kis kiu kkb kki kkk kkl kkn kks kku kl- klb kli kls klu kn- kni knk knl knn knu ksb ksi ksk ksl ksn kss ksu kub kui kuk kul kun kus kuu lbb lbi lbk lbl lbs lbu lib lii lik lil lin lis liu lkb lkl lks llb lli llk lll lln lls llu lnb lni lnk lnl lnn lns lnu lsb lsi lsk lsl lsn lss lsu lub lui luk lul lun lus luu n-i nbb nbi nbk nbl nbn nbs nbu nib nii nik nil nin nis niu nki nkk nkn nks nku nlb nli nlk nll nln nls nlu nnb nni nnk nnl nnn nns nnu nsb nsi nsk nsl nsn nss nsu nub nui nuk nul nun nus nuu sbb sbi sbk sbl sbn sbs sbu sib sii sik sil sin sis siu sk- skb ski skk skl sks sku slb sli slk sll sln sls slu snb sni snk snl snn sns snu ss- ssb ssi ssk ssl ssn sss ssu sub sui suk sul sun sus suu ubb ubi ubk ubl ubn ubs ubu uib uii uil uin uis uiu ukb uki ukk ukl ukn uku ulb uli ulk ull uln uls ulu un- unb uni unk unl unn uns unu usb usi usk usl usn uss usu uun uus uuu