a-a a-i aaa aaf aai aak aan aao aap af- afa aff afi afk afn afo afp ai- aia aif aii aik ain aio aip aka aki akk akn ako akp an- ana anf ani ank ann ano anp aoa aof aoi aok aon aoo aop ap- apa apf api apk apn apo app faa faf fai fak fan fao fap ffa fff ffi ffk ffn ffo ffp fia fif fii fik fin fip fka fkf fki fkk fkp fna fnf fni fnk fnn fnp foa fof foi fok fon foo fop fpa fpi fpk fpn fpo fpp i-f ia- iaa iaf iai ian iao iap ifa iff ifi ifn ifo ifp iia iif iii iin iio iip ika ikf iki ikk iko in- ina inf ini ink inn ino inp io- ioa iof ioi ion ioo iop ipa ipf ipi ipn ipo ipp ka- kaa kaf kai kak kan kao kap kfa kff kfi kfo kia kif kii kik kin kio kip kki kkk kkn kkp kn- kna knf kni knk knn kno knp koa kof koi kok kon koo kop kpa kpf kpi kpk kpn kpo kpp n-i naa naf nai nak nan nao nap nfa nff nfi nfk nfn nfo nfp nia nif nii nik nin nio nip nka nkf nki nkk nkn nko nkp nna nnf nni nnk nnn nno nnp no- noa nof noi nok non noo nop npa npf npi npn npo npp o-i oaa oaf oai oak oan oao oap of- ofa off ofi ofn ofo ofp oia oif oii oik oin oio oip oka oki okk oko okp on- ona onf oni onk onn ono onp oo- ooa oof ooi ook oon ooo oop op- opa opf opi opk opn opo opp p-p paa paf pai pak pan pao pap pfa pff pfi pfk pfn pfo pfp pia pif pii pik pin pio pip pka pkf pki pkn pko pkp pn- pna pnf pni pnk pnn pno pnp poa pof poi pok pon poo pop ppa ppf ppi ppk ppn ppo ppp