b-p bbb bbd bbe bbi bbn bbp bdb bdd bde bdi bdp be- beb bed bee bei ben bep bi- bib bid bie bii bin bip bnb bnd bne bni bnn bnp bpb bpd bpe bpi bpn bpp dbb dbd dbe dbi dbn dbp ddb ddd dde ddi ddn ddp de- deb ded dee dei den dep di- dib did die dii din dip dnb dnd dne dni dnn dnp dpb dpd dpe dpi dpn dpp ebb ebd ebe ebi ebn ebp ed- edb edd ede edi edn edp eeb eed eee een eep eib eid eie eii ein eip en- enb end ene eni enn enp ep- epb epd epe epi epn epp i-d ibb ibd ibe ibi ibn ibp idb idd ide idi idn idp ie- ied iee iei ien iep iib iid iie iii iin iip in- inb ind ine ini inn inp ipb ipd ipe ipi ipn ipp n-i nbb nbd nbe nbi nbn nbp ndb ndd nde ndi ndn ndp ne- neb ned nee nei nen nep nib nid nie nii nin nip nnb nne nni nnn nnp npb npd npe npi npn npp p-p pbb pbd pbe pbi pbn pbp pdb pdd pde pdi pdn pdp peb ped pee pei pen pep pib pid pie pii pin pip pn- pnb pnd pne pni pnn pnp ppb ppd ppe ppi ppn ppp