a-a a-i aaa aaf aai aam aan aao aap aax af- afa aff afi afm afn afo afp afx ai- aia aif aii aim ain aio aip aix ama amf ami amm amn amo amp amx an- ana anf ani anm ann ano anp anx aoa aof aoi aom aon aoo aop aox ap- apa apf api apm apn apo app apx ax- axa axi axm axn axo axp axx faa faf fai fam fan fao fap fax ffa fff ffi ffm ffn ffo ffp ffx fia fif fii fim fin fip fix fma fmf fmi fmm fmn fmo fmp fmx fna fnf fni fnm fnn fnp fnx foa fof foi fom fon foo fop fox fpa fpi fpm fpn fpo fpp fpx fxi fxm fxp fxx i-f ia- iaa iaf iai iam ian iao iap ifa iff ifi ifm ifn ifo ifp ifx iia iif iii iim iin iio iip iix im- ima imf imi imm imn imo imp imx in- ina inf ini inm inn ino inp inx io- ioa iof ioi iom ion ioo iop ipa ipf ipi ipm ipn ipo ipp ipx ixi ixn m-f m-o maa maf mai mam man mao map max mfa mff mfi mfm mfn mfo mfp mi- mia mif mii mim min mio mip mix mma mmf mmi mmm mmn mmo mmp mmx mna mnf mni mnm mnn mno mnp moa mof moi mom mon moo mop mox mpa mpf mpi mpm mpn mpo mpp mpx mxa mxi mxn mxp n-i naa naf nai nam nan nao nap nax nfa nff nfi nfn nfo nfp nia nif nii nim nin nio nip nix nma nmi nmm nmn nmo nmp nna nnf nni nnm nnn nno nnp no- noa nof noi nom non noo nop nox npa npf npi npm npn npo npp o-i oaa oaf oai oam oan oao oap oax of- ofa off ofi ofm ofn ofo ofp ofx oia oif oii oim oin oio oip om- oma omf omi omm omn omo omp omx on- ona onf oni onn ono onp onx oo- ooa oof ooi oom oon ooo oop oox op- opa opf opi opm opn opo opp opx ox- oxa oxf oxi oxn oxo oxx p-p paa paf pai pam pan pao pap pax pfa pff pfi pfm pfn pfo pfp pfx pia pif pii pim pin pio pip pix pma pmf pmi pmm pmn pmo pmp pmx pn- pna pnf pni pnm pnn pno pnp pnx poa pof poi pom pon poo pop pox ppa ppf ppi ppm ppn ppo ppp ppx pxm xaa xaf xam xan xap xfa xfm xfn xfx xia xii xin xio xix xma xmf xmi xmm xmo xmp xmx xna xno xoa xof xoi xom xon xoo xop xox xpa xpf xpm xpn xpo xpp xxi xxo xxp xxx