kubie ukbie kbuie bkuie ubkie bukie kuibe ukibe kiube ikube uikbe iukbe kbiue bkiue kibue ikbue bikue ibkue ubike buike uibke iubke biuke ibuke kubei ukbei kbuei bkuei ubkei bukei kuebi ukebi keubi ekubi uekbi eukbi kbeui bkeui kebui ekbui bekui ebkui ubeki bueki uebki eubki beuki ebuki kuieb ukieb kiueb ikueb uikeb iukeb kueib ukeib keuib ekuib uekib eukib kieub ikeub keiub ekiub iekub eikub uiekb iuekb ueikb euikb ieukb eiukb kbieu bkieu kibeu ikbeu bikeu ibkeu kbeiu bkeiu kebiu ekbiu bekiu ebkiu kiebu ikebu keibu ekibu iekbu eikbu bieku ibeku beiku ebiku iebku eibku ubiek buiek uibek iubek biuek ibuek ubeik bueik uebik eubik beuik ebuik uiebk iuebk ueibk euibk ieubk eiubk bieuk ibeuk beiuk ebiuk iebuk eibuk
Note: these 'words' (valid or invalid) are all the permutations of the word kubie. These words are obtained by scrambling the letters in kubie.