-er ddd dde ddf ddi ddm ddr ddt ddu ddx de- ded dee def dei dem der det deu dex dfd dfe dff dfi dfm dfr dft dfu dfx di- did die dif dii dim dir dit diu dix dmd dme dmf dmi dmm dmr dmt dmu dmx drd dre dri drm drr drt dru drx dtd dte dtf dti dtm dtr dtt dtu dtx dud due duf dui dum dur dut dux dxd dxi dxr dxt dxx ed- edd ede edf edi edm edr edt edu edx eed eee eef eem eer eet eex ef- efd efe eff efi efm efr eft efx eid eie eif eii eim eir eit eiu eix em- emd eme emf emi emm emr emt emu emx erd ere erf eri erm err ert eru etd ete etf eti etm etr ett etu etx eu- eud eue euf eui eur eut eux ex- exd exe exi exr ext exu exx fdd fde fdf fdi fdm fdr fdt fdu fdx fed fee fef fei fem fer fet feu fex ffd ffe fff ffi ffm ffr fft ffu ffx fid fie fif fii fim fir fit fiu fix fmd fme fmf fmi fmm fmr fmt fmu fmx frd fre frf fri frm frr frt fru ftd fte ftf fti ftm ftr ftt ftu ftx fud fue fuf fui fum fur fut fuu fux fxe fxi fxm fxr fxt fxu fxx i-d i-f idd ide idf idi idm idr idt idu idx ie- ied iee ief iei iem ier iet iex ifd ife iff ifi ifm ifr ift ifu ifx iid iie iif iii iim iir iit iiu iix im- imd ime imf imi imm imt imu imx ir- ird ire irf iri irm irr irt iru irx itd ite itf iti itm itt itu itx iu- iud iue iui ium iur iut ixe ixi m-f m-r mdd mde mdf mdi mdm mdr mdt mdu mdx med mee mef mei mem mer met meu mex mfd mfe mff mfi mfm mfr mft mfu mi- mid mie mif mii mim mir mit miu mix mmd mme mmf mmi mmm mmr mmt mmu mmx mrd mre mrf mri mrm mrr mrt mru mrx mtd mte mtf mti mtm mtr mtt mtu mtx mud mue muf mui mum mur mut muu mux mxd mxi mxr mxu rdd rde rdf rdi rdm rdr rdt rdu rdx re- red ree ref rei rem rer ret reu rex rfd rfe rff rfi rfm rfr rft rfu rid rie rif rii rim rir rit rix rmd rme rmf rmi rmm rmr rmt rmx rrd rrf rri rrm rrr rrt rru rtd rte rtf rti rtm rtr rtt rtu rtx rud rue ruf rui rum rur rut ruu rux rxr t-x tdd tde tdf tdi tdm tdr tdt tdu tdx te- ted tee tef tei tem ter tet teu tex tfd tfe tff tfi tfm tfr tft tfu tfx tid tie tif tii tim tir tit tiu tix tmd tme tmf tmi tmm tmr tmt tmu tmx trd tre trf tri trm trr trt tru trx ttd tte ttf tti ttm ttr ttt ttu ttx tud tue tuf tui tum tur tut tuu tux txe txf txi txt txu udd ude udf udi udm udr udt udu udx ued uee uef uei uem uer uet ufd ufe uff ufi ufm ufr uft ufu ufx uid uie uif uii uim uir uit uiu um- umd ume umf umi umm umr umt umu ur- urd ure urf uri urm urr urt uru urx utd ute utf uti utm utr utt utu utx uue uum uur uut uuu uxf uxr uxt uxu xde xdf xdi xdm xdr xdt xed xee xem xer xet xeu xex xfe xfm xft xfx xie xii xit xiu xix xmd xmf xmi xmm xmr xmt xmu xmx xrd xrf xrt xrx xtf xti xtm xtr xtx xue xui xxi xxx