ddles ddles dldes lddes dldes lddes ddels ddels dedls eddls dedls eddls dleds ldeds delds edlds ledds eldds dleds ldeds delds edlds ledds eldds ddlse ddlse dldse lddse dldse lddse ddsle ddsle dsdle sddle dsdle sddle dlsde ldsde dslde sdlde lsdde sldde dlsde ldsde dslde sdlde lsdde sldde ddesl ddesl dedsl eddsl dedsl eddsl ddsel ddsel dsdel sddel dsdel sddel desdl edsdl dsedl sdedl esddl seddl desdl edsdl dsedl sdedl esddl seddl dlesd ldesd delsd edlsd ledsd eldsd dlsed ldsed dsled sdled lsded slded desld edsld dseld sdeld esdld sedld lesdd elsdd lsedd sledd esldd seldd dlesd ldesd delsd edlsd ledsd eldsd dlsed ldsed dsled sdled lsded slded desld edsld dseld sdeld esdld sedld lesdd elsdd lsedd sledd esldd seldd
Note: these 'words' (valid or invalid) are all the permutations of the word ddles. These words are obtained by scrambling the letters in ddles.