euder ueder eduer deuer udeer dueer euedr ueedr eeudr eeudr ueedr euedr edeur deeur eedur eedur deeur edeur udeer dueer ueder euder deuer eduer eudre uedre edure deure udere duere eurde uerde erude reude urede ruede edrue derue erdue redue dreue rdeue udree duree urdee rudee druee rduee euerd ueerd eeurd eeurd ueerd euerd eured uered erued reued ureed rueed eerud eerud ereud reeud ereud reeud uered eured ureed rueed erued reued ederu deeru eedru eedru deeru ederu edreu dereu erdeu redeu dreeu rdeeu eerdu eerdu eredu reedu eredu reedu dereu edreu dreeu rdeeu erdeu redeu udere duere uedre eudre deure edure udree duree urdee rudee druee rduee uerde eurde urede ruede erude reude derue edrue dreue rdeue erdue redue
Note: these 'words' (valid or invalid) are all the permutations of the word euder. These words are obtained by scrambling the letters in euder.