b-u bbb bbd bbh bbi bbo bbr bbu bdb bdd bdh bdi bdo bdr bdu bhb bhd bhh bhi bho bhr bhu bi- bib bid bih bii bio bir biu bob bod boh boi boo bor bou brb brd brh bri bro brr bru bub bud buh bui buo bur buu dbb dbd dbh dbi dbo dbr dbu ddb ddd ddh ddi ddo ddr ddu dh- dhb dhd dhh dhi dho dhr dhu di- dib did dih dii dio dir diu dob dod doh doi doo dor dou drb drd dri dro drr dru dub dud duh dui duo dur h-i hbb hbd hbh hbi hbo hbr hbu hdb hdd hdh hdi hdo hdr hdu hhb hhd hhh hhi hho hhr hhu hib hid hih hii hio hir hiu hob hod hoh hoi hoo hor hou hr- hrb hrd hrh hri hro hrr hru hub hud huh hui huo hur huu i-d ibb ibd ibh ibi ibo ibr ibu idb idd idh idi ido idr idu ihb ihd ihh ihi iho ihr ihu iib iid iih iii iio iir iiu io- iob iod ioh ioi ioo ior iou ir- irb ird iri iro irr iru iu- iub iud iui iur o-i ob- obb obd obh obi obo obr obu odb odd odh odi odo odr odu ohd ohh ohi oho ohr ohu oib oid oii oio oir oiu oo- oob ood ooh ooi ooo oor or- orb ord orh ori oro orr oru ou- oud ouh oui ouo our rbb rbd rbh rbi rbo rbr rbu rdb rdd rdh rdi rdo rdr rdu rh- rhb rhd rhh rhi rho rhr rhu rib rid rih rii rio rir rob rod roh roi roo ror rou rrb rrd rrh rri rrr rru rub rud ruh rui ruo rur ruu ubb ubh ubi ubo ubr ubu udb udd udi udo udr udu uhb uhd uhh uhi uho uhr uhu uib uid uii uio uir uiu uob uod uoo uor ur- urb urd uri uro urr uru uur uuu