b-u bbb bbd bbi bbk bbn bbo bbu bdb bdd bdi bdk bdo bdu bi- bib bid bii bik bin bio biu bkb bkk bkn bko bnb bnd bni bnk bnn bno bnu bob bod boi bok bon boo bou bub bud bui buk bun buo buu dbb dbd dbi dbk dbn dbo dbu ddb ddd ddi ddk ddn ddo ddu di- dib did dii dik din dio diu dkb dki dkk dko dku dnb dnd dni dnk dnn dno dob dod doi dok don doo dou dub dud dui duk dun duo i-d ibb ibd ibi ibk ibn ibo ibu idb idd idi idk idn ido idu iib iid iii iin iio iiu ikb iki ikk iko iku in- inb ind ini ink inn ino inu io- iob iod ioi ion ioo iou iu- iub iud iui kbb kbd kbi kbk kbn kbo kbu kdb kdk kdo kdu kib kid kii kik kin kio kiu kkb kki kkk kkn kku kn- knd kni knk knn kno knu kob kod koi kok kon koo kou kub kud kui kuk kun kuu n-i nbb nbd nbi nbk nbn nbo nbu ndb ndd ndi ndk ndn ndo ndu nib nid nii nik nin nio niu nki nkk nkn nko nku nnb nni nnk nnn nno nnu no- nob nod noi nok non noo nou nub nud nui nuk nun nuo nuu o-i ob- obb obd obi obk obn obo obu odb odd odi odn odo odu oib oid oii oik oin oio oiu okb okd oki okk oko oku on- onb ond oni onk onn ono onu oo- oob ood ooi ook oon ooo ou- oud oui ouk oun ouo ubb ubi ubk ubn ubo ubu udb udd udi udk udn udo udu uib uid uii uin uio uiu ukb uki ukk ukn uku un- unb und uni unk unn uno unu uob uod uok uon uoo uun uuu