b-u bbb bbi bbn bbo bbr bbt bbu bby bi- bib bii bin bio bir bit biu biy bnb bni bnn bno bnr bnt bnu bob boi bon boo bor bot bou boy brb bri brn bro brr brt bru bry btb bti btn bto btr btt btu bty bub bui bun buo bur but buu buy by- byi byn byo byr byt byu ibb ibi ibn ibo ibr ibt ibu iby iib iii iin iio iir iit iiu in- inb ini inn ino inr int inu iny io- iob ioi ion ioo ior iot iou ir- irb iri irn iro irr irt iru iry itb iti itn ito itt itu ity iu- iub iui iur iut iyo iyr iyt iyy n-i nbb nbi nbn nbo nbr nbt nbu nib nii nin nio nir nit niu nnb nni nnn nno nnt nnu no- nob noi non noo nor not nou noy nrb nri nrn nro nrr nrt nru nry ntb nti ntn nto ntr ntt ntu nub nui nun nuo nur nut nuu nuy nyn nyo nyt nyu nyy o-i ob- obb obi obn obo obr obt obu oby oib oii oin oio oir oit oiu on- onb oni onn ono onr ont onu ony oo- oob ooi oon ooo oor oot or- orb ori orn oro orr ort oru ory ot- otb oti otn oto otr ott otu ou- oui oun ouo our out oyi oyo rbb rbi rbn rbo rbr rbt rbu rib rii rin rio rir rit riy rnb rni rnn rno rnr rnt rnu rny rob roi ron roo ror rot rou roy rrb rri rrn rrr rrt rru rtb rti rtn rto rtr rtt rtu rty rub rui run ruo rur rut ruu ruy ry- ryn ryo ryr ryu ryy tbb tbi tbn tbo tbr tbt tbu tib tii tin tio tir tit tiu tiy tnb tni tnn tno tnr tnt to- tob toi ton too tor tot tou toy trb tri trn tro trr trt tru try ttb tti ttn tto ttr ttt ttu tty tub tui tun tuo tur tut tuu tuy tyn tyo tyr tyt ubb ubi ubn ubo ubr ubt ubu uby uib uii uin uio uir uit uiu un- unb uni unn uno unr unt unu uny uob uon uoo uor uot ur- urb uri urn uro urr urt uru ury utb uti utn uto utr utt utu uty uun uur uut uuu uyi uyo uyu ybi ybr yby yii yin yio yir yit ynn ynu yny yob yoi yon yoo yor yot you yoy yrn yro yrt yru ytn yto ytr ytt ytu yui yun yuo yur yut yuu yuy yyb yyt yyu yyy