soths osths stohs tsohs otshs toshs sohts oshts shots hsots ohsts hosts sthos tshos shtos hstos thsos htsos othss tohss ohtss hotss thoss htoss sotsh ostsh stosh tsosh otssh tossh sosth ossth ssoth ssoth ossth sosth stsoh tssoh sstoh sstoh tssoh stsoh otssh tossh ostsh sotsh tsosh stosh sohst oshst shost hsost ohsst hosst sosht ossht ssoht ssoht ossht sosht shsot hssot sshot sshot hssot shsot ohsst hosst oshst sohst hsost shost sthso tshso shtso hstso thsso htsso stsho tssho sstho sstho tssho stsho shsto hssto sshto sshto hssto shsto thsso htsso tshso sthso hstso shtso othss tohss ohtss hotss thoss htoss otshs toshs osths soths tsohs stohs ohsts hosts oshts sohts hsots shots thsos htsos tshos sthos hstos shtos
Note: these 'words' (valid or invalid) are all the permutations of the word soths. These words are obtained by scrambling the letters in soths.