nucel uncel ncuel cnuel ucnel cunel nuecl unecl neucl enucl uencl euncl nceul cneul necul encul cenul ecnul ucenl cuenl uecnl eucnl ceunl ecunl nucle uncle ncule cnule ucnle cunle nulce unlce nluce lnuce ulnce lunce nclue cnlue nlcue lncue clnue lcnue uclne culne ulcne lucne clune lcune nuelc unelc neulc enulc uenlc eunlc nulec unlec nluec lnuec ulnec lunec neluc enluc nleuc lneuc elnuc lenuc uelnc eulnc ulenc luenc elunc leunc ncelu cnelu neclu enclu cenlu ecnlu ncleu cnleu nlceu lnceu clneu lcneu nelcu enlcu nlecu lnecu elncu lencu celnu eclnu clenu lcenu elcnu lecnu uceln cueln uecln eucln ceuln eculn uclen culen ulcen lucen cluen lcuen uelcn eulcn ulecn luecn elucn leucn celun eclun cleun lceun elcun lecun
Note: these 'words' (valid or invalid) are all the permutations of the word nucel. These words are obtained by scrambling the letters in nucel.