b-p bbb bbi bbk bbn bbp bi- bib bii bik bin bip bkb bkk bkn bkp bnb bni bnk bnn bnp bpb bpi bpn bpp ibb ibi ibk ibn ibp iib iii iin iip ikb iki ikk in- inb ini ink inn inp ipb ipi ipn ipp kbb kbi kbk kbn kbp kib kii kik kin kip kkb kki kkk kkn kkp kn- kni knk knn knp kpi kpk kpn kpp n-i nbb nbi nbk nbn nbp nib nii nik nin nip nki nkk nkn nkp nnb nni nnk nnn nnp npb npi npn npp p-p pbb pbi pbk pbn pbp pib pii pik pin pip pkb pki pkn pkp pn- pnb pni pnk pnn pnp ppb ppi ppk ppn ppp