b-p bbb bbd bbi bbn bbo bbp bdb bdd bdi bdo bdp bi- bib bid bii bin bio bip bnb bnd bni bnn bno bnp bob bod boi bon boo bop bpb bpd bpi bpn bpo bpp dbb dbd dbi dbn dbo dbp ddb ddd ddi ddn ddo ddp di- dib did dii din dio dip dnb dnd dni dnn dno dnp dob dod doi don doo dop dpb dpd dpi dpn dpo dpp i-d ibb ibd ibi ibn ibo ibp idb idd idi idn ido idp iib iid iii iin iio iip in- inb ind ini inn ino inp io- iob iod ioi ion ioo iop ipb ipd ipi ipn ipo ipp n-i nbb nbd nbi nbn nbo nbp ndb ndd ndi ndn ndo ndp nib nid nii nin nio nip nnb nni nnn nno nnp no- nob nod noi non noo nop npb npd npi npn npo npp o-i ob- obb obd obi obn obo obp odb odd odi odn odo odp oib oid oii oin oio oip on- onb ond oni onn ono onp oo- oob ood ooi oon ooo oop op- opb opd opi opn opo opp p-p pbb pbd pbi pbn pbo pbp pdb pdd pdi pdn pdo pdp pib pid pii pin pio pip pn- pnb pnd pni pnn pno pnp pob pod poi pon poo pop ppb ppd ppi ppn ppo ppp