b-u bbb bbd bbi bbk bbn bbu bdb bdd bdi bdk bdu bi- bib bid bii bik bin biu bkb bkk bkn bnb bnd bni bnk bnn bnu bub bud bui buk bun buu dbb dbd dbi dbk dbn dbu ddb ddd ddi ddk ddn ddu di- dib did dii dik din diu dkb dki dkk dku dnb dnd dni dnk dnn dub dud dui duk dun i-d ibb ibd ibi ibk ibn ibu idb idd idi idk idn idu iib iid iii iin iiu ikb iki ikk iku in- inb ind ini ink inn inu iu- iub iud iui kbb kbd kbi kbk kbn kbu kdb kdk kdu kib kid kii kik kin kiu kkb kki kkk kkn kku kn- knd kni knk knn knu kub kud kui kuk kun kuu n-i nbb nbd nbi nbk nbn nbu ndb ndd ndi ndk ndn ndu nib nid nii nik nin niu nki nkk nkn nku nnb nni nnk nnn nnu nub nud nui nuk nun nuu ubb ubi ubk ubn ubu udb udd udi udk udn udu uib uid uii uin uiu ukb uki ukk ukn uku un- unb und uni unk unn unu uun uuu