b-u bbb bbd bbi bbn bbo bbu bdb bdd bdi bdo bdu bi- bib bid bii bin bio biu bnb bnd bni bnn bno bnu bob bod boi bon boo bou bub bud bui bun buo buu dbb dbd dbi dbn dbo dbu ddb ddd ddi ddn ddo ddu di- dib did dii din dio diu dnb dnd dni dnn dno dob dod doi don doo dou dub dud dui dun duo i-d ibb ibd ibi ibn ibo ibu idb idd idi idn ido idu iib iid iii iin iio iiu in- inb ind ini inn ino inu io- iob iod ioi ion ioo iou iu- iub iud iui n-i nbb nbd nbi nbn nbo nbu ndb ndd ndi ndn ndo ndu nib nid nii nin nio niu nnb nni nnn nno nnu no- nob nod noi non noo nou nub nud nui nun nuo nuu o-i ob- obb obd obi obn obo obu odb odd odi odn odo odu oib oid oii oin oio oiu on- onb ond oni onn ono onu oo- oob ood ooi oon ooo ou- oud oui oun ouo ubb ubi ubn ubo ubu udb udd udi udn udo udu uib uid uii uin uio uiu un- unb und uni unn uno unu uob uod uon uoo uun uuu