ought uoght oguht gouht ugoht guoht ouhgt uohgt ohugt hougt uhogt huogt oghut gohut ohgut hogut ghout hgout ughot guhot uhgot hugot ghuot hguot ougth uogth oguth gouth ugoth guoth outgh uotgh otugh tough utogh tuogh ogtuh gotuh otguh toguh gtouh tgouh ugtoh gutoh utgoh tugoh gtuoh tguoh ouhtg uohtg ohutg houtg uhotg huotg outhg uothg otuhg touhg utohg tuohg ohtug hotug othug tohug htoug thoug uhtog hutog uthog tuhog htuog thuog oghtu gohtu ohgtu hogtu ghotu hgotu ogthu gothu otghu toghu gtohu tgohu ohtgu hotgu othgu tohgu htogu thogu ghtou hgtou gthou tghou htgou thgou ughto guhto uhgto hugto ghuto hguto ugtho gutho utgho tugho gtuho tguho uhtgo hutgo uthgo tuhgo htugo thugo ghtuo hgtuo gthuo tghuo htguo thguo
Note: these 'words' (valid or invalid) are all the permutations of the word ought. These words are obtained by scrambling the letters in ought.