fff ffi ffk ffn ffo ffp ffz fif fii fik fin fip fiz fkf fki fkk fkp fnf fni fnk fnn fnp fnz fof foi fok fon foo fop foz fpi fpk fpn fpo fpp i-f iff ifi ifn ifo ifp ifz iif iii iin iio iip ikf iki ikk iko in- inf ini ink inn ino inp io- iof ioi ion ioo iop ipf ipi ipn ipo ipp izi izo izz k-z kff kfi kfo kif kii kik kin kio kip kiz kki kkk kkn kkp kn- knf kni knk knn kno knp kof koi kok kon koo kop koz kpf kpi kpk kpn kpo kpp kzo n-i nff nfi nfk nfn nfo nfp nif nii nik nin nio nip niz nkf nki nkk nkn nko nkp nnf nni nnk nnn nno nnp nnz no- nof noi nok non noo nop noz npf npi npn npo npp npz nzf nzi nzo nzp nzz o-i of- off ofi ofn ofo ofp ofz oif oii oik oin oio oip oiz oki okk oko okp on- onf oni onk onn ono onp oo- oof ooi ook oon ooo oop op- opf opi opk opn opo opp ozo ozz p-p pff pfi pfk pfn pfo pfp pif pii pik pin pio pip piz pkf pki pkn pko pkp pn- pnf pni pnk pnn pno pnp pof poi pok pon poo pop poz ppf ppi ppk ppn ppo ppp ppz pzk pzp zfn zif zik zin zio zip ziz znn zno znp zo- zof zoi zok zon zoo zpf zpi zpo zpp zzz