kugel ukgel kguel gkuel ugkel gukel kuegl ukegl keugl ekugl uekgl eukgl kgeul gkeul kegul ekgul gekul egkul ugekl guekl uegkl eugkl geukl egukl kugle ukgle kgule gkule ugkle gukle kulge uklge kluge lkuge ulkge lukge kglue gklue klgue lkgue glkue lgkue uglke gulke ulgke lugke gluke lguke kuelg ukelg keulg ekulg ueklg euklg kuleg ukleg klueg lkueg ulkeg lukeg kelug eklug kleug lkeug elkug lekug uelkg eulkg ulekg luekg elukg leukg kgelu gkelu keglu ekglu geklu egklu kgleu gkleu klgeu lkgeu glkeu lgkeu kelgu eklgu klegu lkegu elkgu lekgu gelku eglku gleku lgeku elgku legku ugelk guelk ueglk euglk geulk egulk uglek gulek ulgek lugek gluek lguek uelgk eulgk ulegk luegk elugk leugk geluk egluk gleuk lgeuk elguk leguk
Note: these 'words' (valid or invalid) are all the permutations of the word kugel. These words are obtained by scrambling the letters in kugel.