-er a-a a-i aaa aae aaf aai aam aao aar aax aea aee aef aei aem aeo aer aex af- afa afe aff afi afm afo afr afx ai- aia aie aif aii aim aio air aix ama ame amf ami amm amo amr amx aoa aoe aof aoi aom aoo aor aox ar- ara are arf ari arm aro arr arx ax- axa axe axi axm axo axr axx eaa eae eaf eai eam eao ear eax eea eee eef eem eeo eer eex ef- efa efe eff efi efm efo efr efx eia eie eif eii eim eio eir eix em- ema eme emf emi emm emo emr emx eo- eoa eoe eof eoi eom eoo eor era ere erf eri erm ero err ex- exa exe exi exo exr exx faa fae faf fai fam fao far fax fea fee fef fei fem feo fer fex ffa ffe fff ffi ffm ffo ffr ffx fia fie fif fii fim fir fix fma fme fmf fmi fmm fmo fmr fmx foa foe fof foi fom foo for fox fra fre frf fri frm fro frr fxe fxi fxm fxr fxx i-f ia- iaa iae iaf iai iam iao iar ie- iea iee ief iei iem ier iex ifa ife iff ifi ifm ifo ifr ifx iia iie iif iii iim iio iir iix im- ima ime imf imi imm imo imx io- ioa ioe iof ioi iom ioo ior ir- ira ire irf iri irm iro irr irx ixe ixi m-f m-o m-r maa mae maf mai mam mao mar max mea mee mef mei mem meo mer mex mfa mfe mff mfi mfm mfo mfr mi- mia mie mif mii mim mio mir mix mma mme mmf mmi mmm mmo mmr mmx moa moe mof moi mom moo mor mox mra mre mrf mri mrm mro mrr mrx mxa mxi mxr o-i oaa oae oaf oai oam oao oar oax oea oee oef oei oem oeo oer oex of- ofa ofe off ofi ofm ofo ofr ofx oia oie oif oii oim oio oir om- oma ome omf omi omm omo omr omx oo- ooa oof ooi oom ooo oor oox or- ora ore orf ori orm oro orr orx ox- oxa oxf oxi oxo oxx ra- raa rae raf rai ram rao rar rax re- rea ree ref rei rem reo rer rex rfa rfe rff rfi rfm rfo rfr ria rie rif rii rim rio rir rix rma rme rmf rmi rmm rmo rmr rmx roa roe rof roi rom roo ror rox rra rrf rri rrm rrr rxr xaa xaf xam xar xee xem xer xex xfa xfe xfm xfx xia xie xii xio xix xma xmf xmi xmm xmo xmr xmx xoa xof xoi xom xoo xor xox xrf xrx xxi xxo xxx