b-u bbb bbd bbi bbn bbo bbr bbu bdb bdd bdi bdo bdr bdu bdv bi- bib bid bii bin bio bir biu biv bnb bnd bni bnn bno bnr bnu bnv bob bod boi bon boo bor bou bov brb brd bri brn bro brr bru brv bub bud bui bun buo bur buu bvb bvd bvi bvn bvo bvr bvu bvv dbb dbd dbi dbn dbo dbr dbu dbv ddb ddd ddi ddn ddo ddr ddu di- dib did dii din dio dir diu div dnb dnd dni dnn dno dnr dob dod doi don doo dor dou dov drb drd dri drn dro drr dru drv dub dud dui dun duo dur duv dvb dvd dvi dvn dvr dvu i-d i-v ibb ibd ibi ibn ibo ibr ibu ibv idb idd idi idn ido idr idu idv iib iid iii iin iio iir iiu in- inb ind ini inn ino inr inu inv io- iob iod ioi ion ioo ior iou iov ir- irb ird iri irn iro irr iru irv iu- iub iud iui iur ivb ivd ivi ivo ivr ivu ivv n-i nbb nbd nbi nbn nbo nbr nbu nbv ndb ndd ndi ndn ndo ndr ndu ndv nib nid nii nin nio nir niu niv nnb nni nnn nno nnu nnv no- nob nod noi non noo nor nou nov nrb nrd nri nrn nro nrr nru nrv nub nud nui nun nuo nur nuu nuv nvb nvd nvi nvn nvu nvv o-i ob- obb obd obi obn obo obr obu obv odb odd odi odn odo odr odu odv oib oid oii oin oio oir oiu oiv on- onb ond oni onn ono onr onu oo- oob ood ooi oon ooo oor oov or- orb ord ori orn oro orr oru orv ou- oud oui oun ouo our ov- ovb ovd ovi ovo ovv rbb rbd rbi rbn rbo rbr rbu rdb rdd rdi rdn rdo rdr rdu rdv rib rid rii rin rio rir riv rnb rnd rni rnn rno rnr rnu rnv rob rod roi ron roo ror rou rov rrb rrd rri rrn rrr rru rub rud rui run ruo rur ruu ruv rvb rvd rvi rvn rvo rvr rvu rvv ubb ubi ubn ubo ubr ubu ubv udb udd udi udn udo udr udu udv uib uid uii uin uio uir uiu un- unb und uni unn uno unr unu unv uob uod uon uoo uor ur- urb urd uri urn uro urr uru uun uur uuu uvb uvo uvu uvv vbd vbi vbo vbr vbv vdb vdd vdi vdo vdr vdu vdv vi- vib vid vii vin vio vir viu viv vn- vnd vni vno vnr vnu vnv vob vod voi von voo vor vou vov vrb vrd vri vrn vrr vru vur vuv vvb vvi vvo vvr vvv