south osuth suoth usoth ousth uosth sotuh ostuh stouh tsouh otsuh tosuh sutoh ustoh stuoh tsuoh utsoh tusoh outsh uotsh otush toush utosh tuosh souht osuht suoht usoht ousht uosht sohut oshut shout hsout ohsut hosut suhot ushot shuot hsuot uhsot husot ouhst uohst ohust houst uhost huost sothu osthu stohu tsohu otshu toshu sohtu oshtu shotu hsotu ohstu hostu sthou tshou shtou hstou thsou htsou othsu tohsu ohtsu hotsu thosu htosu sutho ustho stuho tsuho utsho tusho suhto ushto shuto hsuto uhsto husto sthuo tshuo shtuo hstuo thsuo htsuo uthso tuhso uhtso hutso thuso htuso ouths uoths otuhs touhs utohs tuohs ouhts uohts ohuts houts uhots huots othus tohus ohtus hotus thous htous uthos tuhos uhtos hutos thuos htuos
Note: these 'words' (valid or invalid) are all the permutations of the word south. These words are obtained by scrambling the letters in south.