-er a-a a-i aaa aae aai aam aao aar aax aea aee aei aem aeo aer aex ai- aia aie aii aim aio air aix ama ame ami amm amo amr amx aoa aoe aoi aom aoo aor aox ar- ara are ari arm aro arr arx ax- axa axe axi axm axo axr axx eaa eae eai eam eao ear eax eea eee eem eeo eer eex eia eie eii eim eio eir eix em- ema eme emi emm emo emr emx eo- eoa eoe eoi eom eoo eor era ere eri erm ero err ex- exa exe exi exo exr exx ia- iaa iae iai iam iao iar ie- iea iee iei iem ier iex iia iie iii iim iio iir iix im- ima ime imi imm imo imx io- ioa ioe ioi iom ioo ior ir- ira ire iri irm iro irr irx ixe ixi m-o m-r maa mae mai mam mao mar max mea mee mei mem meo mer mex mi- mia mie mii mim mio mir mix mma mme mmi mmm mmo mmr mmx moa moe moi mom moo mor mox mra mre mri mrm mro mrr mrx mxa mxi mxr o-i oaa oae oai oam oao oar oax oea oee oei oem oeo oer oex oia oie oii oim oio oir om- oma ome omi omm omo omr omx oo- ooa ooi oom ooo oor oox or- ora ore ori orm oro orr orx ox- oxa oxi oxo oxx ra- raa rae rai ram rao rar rax re- rea ree rei rem reo rer rex ria rie rii rim rio rir rix rma rme rmi rmm rmo rmr rmx roa roe roi rom roo ror rox rra rri rrm rrr rxr xaa xam xar xee xem xer xex xia xie xii xio xix xma xmi xmm xmo xmr xmx xoa xoi xom xoo xor xox xrx xxi xxo xxx