-er ddd dde ddm ddo ddr ddt ddu ddx de- ded dee dem deo der det deu dex dmd dme dmm dmo dmr dmt dmu dmx dod doe dom doo dor dot dou dox drd dre drm dro drr drt dru drx dtd dte dtm dto dtr dtt dtu dtx dud due dum duo dur dut dux dxd dxo dxr dxt dxx ed- edd ede edm edo edr edt edu edx eed eee eem eeo eer eet eex em- emd eme emm emo emr emt emu emx eo- eod eoe eom eoo eor eot eou erd ere erm ero err ert eru etd ete etm eto etr ett etu etx eu- eud eue eur eut eux ex- exd exe exo exr ext exu exx m-o m-r mdd mde mdm mdo mdr mdt mdu mdx med mee mem meo mer met meu mex mmd mme mmm mmo mmr mmt mmu mmx mod moe mom moo mor mot mou mox mrd mre mrm mro mrr mrt mru mrx mtd mte mtm mto mtr mtt mtu mtx mud mue mum mur mut muu mux mxd mxr mxu odd ode odm odo odr odt odu oed oee oem oeo oer oet oex om- omd ome omm omo omr omt omu omx oo- ood oom ooo oor oot oox or- ord ore orm oro orr ort oru orx ot- otd ote otm oto otr ott otu ou- oud oue oum ouo our out ox- oxo oxt oxx rdd rde rdm rdo rdr rdt rdu rdx re- red ree rem reo rer ret reu rex rmd rme rmm rmo rmr rmt rmx rod roe rom roo ror rot rou rox rrd rrm rrr rrt rru rtd rte rtm rto rtr rtt rtu rtx rud rue rum ruo rur rut ruu rux rxr t-x tdd tde tdm tdo tdr tdt tdu tdx te- ted tee tem teo ter tet teu tex tmd tme tmm tmo tmr tmt tmu tmx to- tod toe tom too tor tot tou tox trd tre trm tro trr trt tru trx ttd tte ttm tto ttr ttt ttu ttx tud tue tum tuo tur tut tuu tux txe txt txu udd ude udm udo udr udt udu udx ued uee uem uer uet um- umd ume umm umo umr umt umu uod uoe uom uoo uor uot uox ur- urd ure urm uro urr urt uru urx utd ute utm uto utr utt utu utx uue uum uur uut uuu uxo uxr uxt uxu xde xdm xdr xdt xed xee xem xer xet xeu xex xmd xmm xmo xmr xmt xmu xmx xod xom xoo xor xot xox xrd xrt xrx xtm xtr xtx xue xxo xxx