poupt opupt puopt upopt ouppt uoppt poput opput ppout ppout opput poput pupot uppot ppuot ppuot uppot pupot ouppt uoppt opupt poupt upopt puopt poutp oputp puotp upotp ouptp uoptp potup optup ptoup tpoup otpup topup putop uptop ptuop tpuop utpop tupop outpp uotpp otupp toupp utopp tuopp poptu opptu ppotu ppotu opptu poptu potpu optpu ptopu tpopu otppu toppu pptou pptou ptpou tppou ptpou tppou optpu potpu otppu toppu ptopu tpopu pupto uppto pputo pputo uppto pupto putpo uptpo ptupo tpupo utppo tuppo pptuo pptuo ptpuo tppuo ptpuo tppuo uptpo putpo utppo tuppo ptupo tpupo ouptp uoptp oputp poutp upotp puotp outpp uotpp otupp toupp utopp tuopp optup potup otpup topup ptoup tpoup uptop putop utpop tupop ptuop tpuop
Note: these 'words' (valid or invalid) are all the permutations of the word poupt. These words are obtained by scrambling the letters in poupt.