b-u bbb bbd bbi bbo bbr bbu bby bdb bdd bdi bdo bdr bdu bdy bi- bib bid bii bio bir biu biy bob bod boi boo bor bou boy brb brd bri bro brr bru bry bub bud bui buo bur buu buy by- byd byi byo byr byu dbb dbd dbi dbo dbr dbu dby ddb ddd ddi ddo ddr ddu ddy di- dib did dii dio dir diu diy dob dod doi doo dor dou doy drb drd dri dro drr dru dry dub dud dui duo dur duy dy- dyb dyd dyo dyr dyu dyy i-d ibb ibd ibi ibo ibr ibu iby idb idd idi ido idr idu idy iib iid iii iio iir iiu io- iob iod ioi ioo ior iou ir- irb ird iri iro irr iru iry iu- iub iud iui iur iyo iyr iyy o-i ob- obb obd obi obo obr obu oby odb odd odi odo odr odu oib oid oii oio oir oiu oo- oob ood ooi ooo oor or- orb ord ori oro orr oru ory ou- oud oui ouo our oyd oyi oyo rbb rbd rbi rbo rbr rbu rdb rdd rdi rdo rdr rdu rdy rib rid rii rio rir riy rob rod roi roo ror rou roy rrb rrd rri rrr rru rub rud rui ruo rur ruu ruy ry- ryd ryo ryr ryu ryy ubb ubi ubo ubr ubu uby udb udd udi udo udr udu uib uid uii uio uir uiu uob uod uoo uor ur- urb urd uri uro urr uru ury uur uuu uyi uyo uyu ybi ybr yby ydo ydy yid yii yio yir yob yod yoi yoo yor you yoy yro yru yud yui yuo yur yuu yuy yyb yyu yyy