leisd elisd liesd ilesd eilsd ielsd lesid elsid lseid sleid eslid selid lised ilsed lsied slied isled siled eisld iesld esild seild iseld sield leids elids lieds ileds eilds ields ledis eldis ldeis dleis edlis delis lides ildes ldies dlies idles diles eidls iedls edils deils idels diels lesdi elsdi lsedi sledi esldi seldi ledsi eldsi ldesi dlesi edlsi delsi lsdei sldei ldsei dlsei sdlei dslei esdli sedli edsli desli sdeli dseli lisde ilsde lside slide islde silde lidse ildse ldise dlise idlse dilse lsdie sldie ldsie dlsie sdlie dslie isdle sidle idsle disle sdile dsile eisdl iesdl esidl seidl isedl siedl eidsl iedsl edisl deisl idesl diesl esdil sedil edsil desil sdeil dseil isdel sidel idsel disel sdiel dsiel
Note: these 'words' (valid or invalid) are all the permutations of the word leisd. These words are obtained by scrambling the letters in leisd.