b-u bbb bbi bbk bbm bbn bbu bi- bib bii bik bim bin biu bkb bkk bkm bkn bmb bmi bmk bmm bmn bmu bnb bni bnk bnn bnu bub bui buk bum bun buu ibb ibi ibk ibm ibn ibu iib iii iim iin iiu ikb iki ikk iku im- imb imi imm imn imu in- inb ini ink inm inn inu iu- iub iui ium kbb kbi kbk kbm kbn kbu kib kii kik kim kin kiu kkb kki kkk kkm kkn kku kmb kmi kmk kmm kmu kn- kni knk knm knn knu kub kui kuk kum kun kuu mbb mbi mbk mbm mbu mi- mib mii mik mim min miu mkb mkk mkm mkn mku mmb mmi mmk mmm mmn mmu mnb mni mnk mnm mnn mnu mub mui muk mum mun muu n-i nbb nbi nbk nbm nbn nbu nib nii nik nim nin niu nki nkk nkm nkn nku nmb nmi nmk nmm nmn nmu nnb nni nnk nnm nnn nnu nub nui nuk num nun nuu ubb ubi ubk ubn ubu uib uii uim uin uiu ukb uki ukk ukn uku um- umb umi umm umn umu un- unb uni unk unm unn unu uum uun uuu