a-a a-i aaa aaf aai aam aan aao aar aax af- afa aff afi afm afn afo afr afx ai- aia aif aii aim ain aio air aix ama amf ami amm amn amo amr amx an- ana anf ani anm ann ano anr anx aoa aof aoi aom aon aoo aor aox ar- ara arf ari arm arn aro arr arx ax- axa axi axm axn axo axr axx faa faf fai fam fan fao far fax ffa fff ffi ffm ffn ffo ffr ffx fia fif fii fim fin fir fix fma fmf fmi fmm fmn fmo fmr fmx fna fnf fni fnm fnn fnr fnx foa fof foi fom fon foo for fox fra frf fri frm frn fro frr fxi fxm fxr fxx i-f ia- iaa iaf iai iam ian iao iar ifa iff ifi ifm ifn ifo ifr ifx iia iif iii iim iin iio iir iix im- ima imf imi imm imn imo imx in- ina inf ini inm inn ino inr inx io- ioa iof ioi iom ion ioo ior ir- ira irf iri irm irn iro irr irx ixi ixn m-f m-o m-r maa maf mai mam man mao mar max mfa mff mfi mfm mfn mfo mfr mi- mia mif mii mim min mio mir mix mma mmf mmi mmm mmn mmo mmr mmx mna mnf mni mnm mnn mno mnr moa mof moi mom mon moo mor mox mra mrf mri mrm mrn mro mrr mrx mxa mxi mxn mxr n-i naa naf nai nam nan nao nar nax nfa nff nfi nfn nfo nfr nia nif nii nim nin nio nir nix nma nmi nmm nmn nmo nmr nna nnf nni nnm nnn nno no- noa nof noi nom non noo nor nox nra nrf nri nrm nrn nro nrr nrx o-i oaa oaf oai oam oan oao oar oax of- ofa off ofi ofm ofn ofo ofr ofx oia oif oii oim oin oio oir om- oma omf omi omm omn omo omr omx on- ona onf oni onn ono onr onx oo- ooa oof ooi oom oon ooo oor oox or- ora orf ori orm orn oro orr orx ox- oxa oxf oxi oxn oxo oxx ra- raa raf rai ram ran rao rar rax rfa rff rfi rfm rfn rfo rfr ria rif rii rim rin rio rir rix rma rmf rmi rmm rmn rmo rmr rmx rna rni rnm rnn rno rnr roa rof roi rom ron roo ror rox rra rrf rri rrm rrn rrr rxr xaa xaf xam xan xar xfa xfm xfn xfx xia xii xin xio xix xma xmf xmi xmm xmo xmr xmx xna xno xoa xof xoi xom xon xoo xor xox xrf xrx xxi xxo xxx