b-u bbb bbg bbi bbk bbn bbr bbu bgb bgg bgi bgk bgn bgr bgu bi- bib big bii bik bin bir biu bkb bkg bkk bkn bkr bnb bng bni bnk bnn bnr bnu brb brg bri brk brn brr bru bub bug bui buk bun bur buu gbg gbi gbk gbn gbr gbu ggb ggg ggi ggn ggr ggu gib gig gii gik gin gir giu gkb gkn gnb gni gnn gnr gnu grb grg gri grk grn grr gru gu- gub gug gui guk gun gur guu ibb ibg ibi ibk ibn ibr ibu igb igg igi igk ign igr igu iib iii iin iir iiu ikb iki ikk ikr iku in- inb ing ini ink inn inr inu ir- irb irg iri irk irn irr iru iu- iub iug iui iur kbb kbi kbk kbn kbr kbu kgb kgi kgu kib kig kii kik kin kir kiu kkb kki kkk kkn kkr kku kn- kng kni knk knn knr knu krg kri krk krn krr kru kub kug kui kuk kun kur kuu n-i nbb nbg nbi nbk nbn nbr nbu ngb ngg ngi ngk ngn ngu nib nig nii nik nin nir niu nki nkk nkn nkr nku nnb nng nni nnk nnn nnu nrb nrg nri nrk nrn nrr nru nub nug nui nuk nun nur nuu rbb rbg rbi rbk rbn rbr rbu rgb rgg rgi rgk rgn rgr rib rig rii rik rin rir rkb rkg rkk rku rnb rng rni rnn rnr rnu rrb rrg rri rrk rrn rrr rru rub rug rui ruk run rur ruu ubb ubg ubi ubk ubn ubr ubu ugb ugg ugi ugk ugn ugr ugu uib uig uii uin uir uiu ukb uki ukk ukn ukr uku un- unb ung uni unk unn unr unu ur- urb urg uri urk urn urr uru uug uun uur uuu