a-a a-i aaa aad aae aaf aai aam aax ad- ada add ade adf adi adm adx aea aed aee aef aei aem aex af- afa afd afe aff afi afm afx ai- aia aid aie aif aii aim aix ama amd ame amf ami amm amx ax- axa axe axi axm axx daa dad dae daf dai dam dax dda ddd dde ddf ddi ddm ddx de- dea ded dee def dei dem dex dfa dfd dfe dff dfi dfm dfx di- dia did die dif dii dim dix dma dmd dme dmf dmi dmm dmx dxd dxi dxx eaa ead eae eaf eai eam eax ed- eda edd ede edf edi edm edx eea eed eee eef eem eex ef- efa efd efe eff efi efm efx eia eid eie eif eii eim eix em- ema emd eme emf emi emm emx ex- exa exd exe exi exx faa fad fae faf fai fam fax fda fdd fde fdf fdi fdm fdx fea fed fee fef fei fem fex ffa ffd ffe fff ffi ffm ffx fia fid fie fif fii fim fix fma fmd fme fmf fmi fmm fmx fxe fxi fxm fxx i-d i-f ia- iaa iad iae iaf iai iam ida idd ide idf idi idm idx ie- iea ied iee ief iei iem iex ifa ifd ife iff ifi ifm ifx iia iid iie iif iii iim iix im- ima imd ime imf imi imm imx ixe ixi m-f maa mad mae maf mai mam max mda mdd mde mdf mdi mdm mdx mea med mee mef mei mem mex mfa mfd mfe mff mfi mfm mi- mia mid mie mif mii mim mix mma mmd mme mmf mmi mmm mmx mxa mxd mxi xaa xad xaf xam xda xde xdf xdi xdm xed xee xem xex xfa xfe xfm xfx xia xie xii xix xma xmd xmf xmi xmm xmx xxi xxx