b-u bbb bbi bbn bbr bbt bbu bby bi- bib bii bin bir bit biu biy bnb bni bnn bnr bnt bnu brb bri brn brr brt bru bry btb bti btn btr btt btu bty bub bui bun bur but buu buy by- byi byn byr byt byu ibb ibi ibn ibr ibt ibu iby iib iii iin iir iit iiu in- inb ini inn inr int inu iny ir- irb iri irn irr irt iru iry itb iti itn itt itu ity iu- iub iui iur iut iyr iyt iyy n-i nbb nbi nbn nbr nbt nbu nib nii nin nir nit niu nnb nni nnn nnt nnu nrb nri nrn nrr nrt nru nry ntb nti ntn ntr ntt ntu nub nui nun nur nut nuu nuy nyn nyt nyu nyy rbb rbi rbn rbr rbt rbu rib rii rin rir rit riy rnb rni rnn rnr rnt rnu rny rrb rri rrn rrr rrt rru rtb rti rtn rtr rtt rtu rty rub rui run rur rut ruu ruy ry- ryn ryr ryu ryy tbb tbi tbn tbr tbt tbu tib tii tin tir tit tiu tiy tnb tni tnn tnr tnt trb tri trn trr trt tru try ttb tti ttn ttr ttt ttu tty tub tui tun tur tut tuu tuy tyn tyr tyt ubb ubi ubn ubr ubt ubu uby uib uii uin uir uit uiu un- unb uni unn unr unt unu uny ur- urb uri urn urr urt uru ury utb uti utn utr utt utu uty uun uur uut uuu uyi uyu ybi ybr yby yii yin yir yit ynn ynu yny yrn yrt yru ytn ytr ytt ytu yui yun yur yut yuu yuy yyb yyt yyu yyy