b-u bbb bbg bbi bbk bbn bbu bgb bgg bgi bgk bgn bgu bi- bib big bii bik bin biu bkb bkg bkk bkn bnb bng bni bnk bnn bnu bub bug bui buk bun buu gbg gbi gbk gbn gbu ggb ggg ggi ggn ggu gib gig gii gik gin giu gkb gkn gnb gni gnn gnu gu- gub gug gui guk gun guu ibb ibg ibi ibk ibn ibu igb igg igi igk ign igu iib iii iin iiu ikb iki ikk iku in- inb ing ini ink inn inu iu- iub iug iui kbb kbi kbk kbn kbu kgb kgi kgu kib kig kii kik kin kiu kkb kki kkk kkn kku kn- kng kni knk knn knu kub kug kui kuk kun kuu n-i nbb nbg nbi nbk nbn nbu ngb ngg ngi ngk ngn ngu nib nig nii nik nin niu nki nkk nkn nku nnb nng nni nnk nnn nnu nub nug nui nuk nun nuu ubb ubg ubi ubk ubn ubu ugb ugg ugi ugk ugn ugu uib uig uii uin uiu ukb uki ukk ukn uku un- unb ung uni unk unn unu uug uun uuu