-er a-a a-i aaa aad aae aai aam aar aax ad- ada add ade adi adm adr adx aea aed aee aei aem aer aex ai- aia aid aie aii aim air aix ama amd ame ami amm amr amx ar- ara ard are ari arm arr arx ax- axa axe axi axm axr axx daa dad dae dai dam dar dax dda ddd dde ddi ddm ddr ddx de- dea ded dee dei dem der dex di- dia did die dii dim dir dix dma dmd dme dmi dmm dmr dmx dra drd dre dri drm drr drx dxd dxi dxr dxx eaa ead eae eai eam ear eax ed- eda edd ede edi edm edr edx eea eed eee eem eer eex eia eid eie eii eim eir eix em- ema emd eme emi emm emr emx era erd ere eri erm err ex- exa exd exe exi exr exx i-d ia- iaa iad iae iai iam iar ida idd ide idi idm idr idx ie- iea ied iee iei iem ier iex iia iid iie iii iim iir iix im- ima imd ime imi imm imx ir- ira ird ire iri irm irr irx ixe ixi m-r maa mad mae mai mam mar max mda mdd mde mdi mdm mdr mdx mea med mee mei mem mer mex mi- mia mid mie mii mim mir mix mma mmd mme mmi mmm mmr mmx mra mrd mre mri mrm mrr mrx mxa mxd mxi mxr ra- raa rad rae rai ram rar rax rda rdd rde rdi rdm rdr rdx re- rea red ree rei rem rer rex ria rid rie rii rim rir rix rma rmd rme rmi rmm rmr rmx rra rrd rri rrm rrr rxr xaa xad xam xar xda xde xdi xdm xdr xed xee xem xer xex xia xie xii xix xma xmd xmi xmm xmr xmx xrd xrx xxi xxx