b-u bbb bbd bbi bbk bbn bbr bbu bdb bdd bdi bdk bdr bdu bi- bib bid bii bik bin bir biu bkb bkk bkn bkr bnb bnd bni bnk bnn bnr bnu brb brd bri brk brn brr bru bub bud bui buk bun bur buu dbb dbd dbi dbk dbn dbr dbu ddb ddd ddi ddk ddn ddr ddu di- dib did dii dik din dir diu dkb dki dkk dkr dku dnb dnd dni dnk dnn dnr drb drd dri drk drn drr dru dub dud dui duk dun dur i-d ibb ibd ibi ibk ibn ibr ibu idb idd idi idk idn idr idu iib iid iii iin iir iiu ikb iki ikk ikr iku in- inb ind ini ink inn inr inu ir- irb ird iri irk irn irr iru iu- iub iud iui iur kbb kbd kbi kbk kbn kbr kbu kdb kdk kdr kdu kib kid kii kik kin kir kiu kkb kki kkk kkn kkr kku kn- knd kni knk knn knr knu krd kri krk krn krr kru kub kud kui kuk kun kur kuu n-i nbb nbd nbi nbk nbn nbr nbu ndb ndd ndi ndk ndn ndr ndu nib nid nii nik nin nir niu nki nkk nkn nkr nku nnb nni nnk nnn nnu nrb nrd nri nrk nrn nrr nru nub nud nui nuk nun nur nuu rbb rbd rbi rbk rbn rbr rbu rdb rdd rdi rdn rdr rdu rib rid rii rik rin rir rkb rkk rku rnb rnd rni rnn rnr rnu rrb rrd rri rrk rrn rrr rru rub rud rui ruk run rur ruu ubb ubi ubk ubn ubr ubu udb udd udi udk udn udr udu uib uid uii uin uir uiu ukb uki ukk ukn ukr uku un- unb und uni unk unn unr unu ur- urb urd uri urk urn urr uru uun uur uuu