-er a-a aaa aad aae aam aao aar aax ad- ada add ade adm ado adr adx aea aed aee aem aeo aer aex ama amd ame amm amo amr amx aoa aod aoe aom aoo aor aox ar- ara ard are arm aro arr arx ax- axa axe axm axo axr axx daa dad dae dam dao dar dax dda ddd dde ddm ddo ddr ddx de- dea ded dee dem deo der dex dma dmd dme dmm dmo dmr dmx doa dod doe dom doo dor dox dra drd dre drm dro drr drx dxd dxo dxr dxx eaa ead eae eam eao ear eax ed- eda edd ede edm edo edr edx eea eed eee eem eeo eer eex em- ema emd eme emm emo emr emx eo- eoa eod eoe eom eoo eor era erd ere erm ero err ex- exa exd exe exo exr exx m-o m-r maa mad mae mam mao mar max mda mdd mde mdm mdo mdr mdx mea med mee mem meo mer mex mma mmd mme mmm mmo mmr mmx moa mod moe mom moo mor mox mra mrd mre mrm mro mrr mrx mxa mxd mxr oaa oad oae oam oao oar oax oda odd ode odm odo odr oea oed oee oem oeo oer oex om- oma omd ome omm omo omr omx oo- ooa ood oom ooo oor oox or- ora ord ore orm oro orr orx ox- oxa oxo oxx ra- raa rad rae ram rao rar rax rda rdd rde rdm rdo rdr rdx re- rea red ree rem reo rer rex rma rmd rme rmm rmo rmr rmx roa rod roe rom roo ror rox rra rrd rrm rrr rxr xaa xad xam xar xda xde xdm xdr xed xee xem xer xex xma xmd xmm xmo xmr xmx xoa xod xom xoo xor xox xrd xrx xxo xxx