ddd dde ddm ddo ddt ddx de- ded dee dem deo det dex dmd dme dmm dmo dmt dmx dod doe dom doo dot dox dtd dte dtm dto dtt dtx dxd dxo dxt dxx ed- edd ede edm edo edt edx eed eee eem eeo eet eex em- emd eme emm emo emt emx eo- eod eoe eom eoo eot etd ete etm eto ett etx ex- exd exe exo ext exx m-o mdd mde mdm mdo mdt mdx med mee mem meo met mex mmd mme mmm mmo mmt mmx mod moe mom moo mot mox mtd mte mtm mto mtt mtx mxd odd ode odm odo odt oed oee oem oeo oet oex om- omd ome omm omo omt omx oo- ood oom ooo oot oox ot- otd ote otm oto ott ox- oxo oxt oxx t-x tdd tde tdm tdo tdt tdx te- ted tee tem teo tet tex tmd tme tmm tmo tmt tmx to- tod toe tom too tot tox ttd tte ttm tto ttt ttx txe txt xde xdm xdt xed xee xem xet xex xmd xmm xmo xmt xmx xod xom xoo xot xox xtm xtx xxo xxx