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