b-u bbb bbg bbi bbo bbr bbt bbu bby bgb bgg bgi bgo bgr bgt bgu bi- bib big bii bio bir bit biu biy bob bog boi boo bor bot bou boy brb brg bri bro brr brt bru bry btb btg bti bto btr btt btu bty bub bug bui buo bur but buu buy by- byg byi byo byr byt byu gbg gbi gbo gbr gbt gbu gby ggb ggg ggi ggo ggr ggt ggu gib gig gii gio gir git giu giy gob gog goi goo gor got gou goy grb grg gri gro grr grt gru gry gtb gtg gti gto gtr gtt gtu gty gu- gub gug gui guo gur gut guu guy gy- gyb gyo gyr ibb ibg ibi ibo ibr ibt ibu iby igb igg igi igo igr igt igu igy iib iii iio iir iit iiu io- iob iog ioi ioo ior iot iou ir- irb irg iri iro irr irt iru iry itb itg iti ito itt itu ity iu- iub iug iui iur iut iyo iyr iyt iyy o-i ob- obb obg obi obo obr obt obu oby ogg ogi ogo ogt ogy oib oii oio oir oit oiu oo- oob oog ooi ooo oor oot or- orb org ori oro orr ort oru ory ot- otb otg oti oto otr ott otu ou- oui ouo our out oyi oyo rbb rbg rbi rbo rbr rbt rbu rgb rgg rgi rgo rgr rgt rib rig rii rio rir rit riy rob rog roi roo ror rot rou roy rrb rrg rri rrr rrt rru rtb rtg rti rto rtr rtt rtu rty rub rug rui ruo rur rut ruu ruy ry- ryg ryo ryr ryu ryy tbb tbg tbi tbo tbr tbt tbu tgb tgg tgi tgo tgr tgt tgu tgy tib tig tii tio tir tit tiu tiy to- tob tog toi too tor tot tou toy trb trg tri tro trr trt tru try ttb ttg tti tto ttr ttt ttu tty tub tug tui tuo tur tut tuu tuy tyg tyo tyr tyt ubb ubg ubi ubo ubr ubt ubu uby ugb ugg ugi ugo ugr ugt ugu uib uig uii uio uir uit uiu uob uog uoo uor uot ur- urb urg uri uro urr urt uru ury utb uti uto utr utt utu uty uug uur uut uuu uyi uyo uyu ybg ybi ybr yby ygo yig yii yio yir yit yob yog yoi yoo yor yot you yoy yrg yro yrt yru yto ytr ytt ytu yug yui yuo yur yut yuu yuy yyb yyg yyt yyu yyy