b-u bbb bbi bbk bbl bbm bbu bi- bib bii bik bil bim biu bkb bkk bkl bkm blb bli blk bll blm blu bmb bmi bmk bml bmm bmu bub bui buk bul bum buu ibb ibi ibk ibl ibm ibu iib iii iil iim iiu ikb iki ikk ikl iku il- ilb ili ilk ill ilm ilu im- imb imi iml imm imu iu- iub iui ium kbb kbi kbk kbl kbm kbu kib kii kik kil kim kiu kkb kki kkk kkl kkm kku kl- klb kli klm klu kmb kmi kmk kml kmm kmu kub kui kuk kul kum kuu lbb lbi lbk lbl lbm lbu lib lii lik lil lim liu lkb lkl llb lli llk lll llm llu lmb lmi lmk lml lmm lmu lub lui luk lul lum luu mbb mbi mbk mbl mbm mbu mi- mib mii mik mil mim miu mkb mkk mkl mkm mku mlb mli mlk mll mlm mlu mmb mmi mmk mml mmm mmu mub mui muk mul mum muu ubb ubi ubk ubl ubu uib uii uil uim uiu ukb uki ukk ukl uku ulb uli ulk ull ulm ulu um- umb umi uml umm umu uum uuu