b-p bbb bbd bbi bbn bbp bdb bdd bdi bdp bi- bib bid bii bin bip bnb bnd bni bnn bnp bpb bpd bpi bpn bpp dbb dbd dbi dbn dbp ddb ddd ddi ddn ddp di- dib did dii din dip dnb dnd dni dnn dnp dpb dpd dpi dpn dpp i-d ibb ibd ibi ibn ibp idb idd idi idn idp iib iid iii iin iip in- inb ind ini inn inp ipb ipd ipi ipn ipp n-i nbb nbd nbi nbn nbp ndb ndd ndi ndn ndp nib nid nii nin nip nnb nni nnn nnp npb npd npi npn npp p-p pbb pbd pbi pbn pbp pdb pdd pdi pdn pdp pib pid pii pin pip pn- pnb pnd pni pnn pnp ppb ppd ppi ppn ppp