slecu lsecu selcu eslcu lescu elscu slceu lsceu scleu csleu lcseu clseu seclu esclu scelu cselu ecslu ceslu lecsu elcsu lcesu clesu eclsu celsu sleuc lseuc seluc esluc lesuc elsuc sluec lsuec sulec uslec lusec ulsec seulc esulc suelc uselc euslc ueslc leusc elusc luesc ulesc eulsc uelsc slcue lscue sclue cslue lcsue clsue sluce lsuce sulce uslce lusce ulsce scule csule sucle uscle cusle ucsle lcuse cluse lucse ulcse culse uclse secul escul sceul cseul ecsul cesul seucl esucl suecl usecl euscl uescl scuel csuel sucel uscel cusel ucsel ecusl ceusl eucsl uecsl cuesl ucesl lecus elcus lceus cleus eclus celus leucs elucs luecs ulecs eulcs uelcs lcues clues luces ulces cules ucles eculs ceuls eucls uecls cuels ucels
Note: these 'words' (valid or invalid) are all the permutations of the word slecu. These words are obtained by scrambling the letters in slecu.