bbb bbd bbi bbk bbn bbo bdb bdd bdi bdk bdo bi- bib bid bii bik bin bio bkb bkk bkn bko bnb bnd bni bnk bnn bno bob bod boi bok bon boo dbb dbd dbi dbk dbn dbo ddb ddd ddi ddk ddn ddo di- dib did dii dik din dio dkb dki dkk dko dnb dnd dni dnk dnn dno dob dod doi dok don doo i-d ibb ibd ibi ibk ibn ibo idb idd idi idk idn ido iib iid iii iin iio ikb iki ikk iko in- inb ind ini ink inn ino io- iob iod ioi ion ioo kbb kbd kbi kbk kbn kbo kdb kdk kdo kib kid kii kik kin kio kkb kki kkk kkn kn- knd kni knk knn kno kob kod koi kok kon koo n-i nbb nbd nbi nbk nbn nbo ndb ndd ndi ndk ndn ndo nib nid nii nik nin nio nki nkk nkn nko nnb nni nnk nnn nno no- nob nod noi nok non noo o-i ob- obb obd obi obk obn obo odb odd odi odn odo oib oid oii oik oin oio okb okd oki okk oko on- onb ond oni onk onn ono oo- oob ood ooi ook oon ooo