bbb bbd bbi bbn bbo bbr bdb bdd bdi bdo bdr bi- bib bid bii bin bio bir bnb bnd bni bnn bno bnr bob bod boi bon boo bor brb brd bri brn bro brr dbb dbd dbi dbn dbo dbr ddb ddd ddi ddn ddo ddr di- dib did dii din dio dir dnb dnd dni dnn dno dnr dob dod doi don doo dor drb drd dri drn dro drr i-d ibb ibd ibi ibn ibo ibr idb idd idi idn ido idr iib iid iii iin iio iir in- inb ind ini inn ino inr io- iob iod ioi ion ioo ior ir- irb ird iri irn iro irr n-i nbb nbd nbi nbn nbo nbr ndb ndd ndi ndn ndo ndr nib nid nii nin nio nir nnb nni nnn nno no- nob nod noi non noo nor nrb nrd nri nrn nro nrr o-i ob- obb obd obi obn obo obr odb odd odi odn odo odr oib oid oii oin oio oir on- onb ond oni onn ono onr oo- oob ood ooi oon ooo oor or- orb ord ori orn oro orr rbb rbd rbi rbn rbo rbr rdb rdd rdi rdn rdo rdr rib rid rii rin rio rir rnb rnd rni rnn rno rnr rob rod roi ron roo ror rrb rrd rri rrn rrr