stoups tsoups sotups ostups tosups otsups stuops tsuops sutops ustops tusops utsops soutps osutps suotps usotps oustps uostps tousps otusps tuosps utosps outsps uotsps stopus tsopus sotpus ostpus tospus otspus stpous tspous sptous pstous tpsous ptsous soptus osptus spotus psotus opstus postus topsus otpsus tposus ptosus optsus potsus stupos tsupos sutpos ustpos tuspos utspos stpuos tspuos sptuos pstuos tpsuos ptsuos suptos usptos sputos psutos upstos pustos tupsos utpsos tpusos ptusos uptsos putsos soupts osupts suopts usopts ouspts uospts soputs osputs spouts psouts opsuts posuts supots uspots spuots psuots upsots pusots oupsts uopsts opusts pousts uposts puosts toupss otupss tuopss utopss outpss uotpss topuss otpuss tpouss ptouss optuss potuss tuposs utposs tpuoss ptuoss uptoss putoss ouptss uoptss oputss poutss upotss puotss stousp tsousp sotusp ostusp tosusp otsusp stuosp tsuosp sutosp ustosp tusosp utsosp soutsp osutsp suotsp usotsp oustsp uostsp toussp otussp tuossp utossp outssp uotssp stosup tsosup sotsup ostsup tossup otssup stsoup tssoup sstoup sstoup tssoup stsoup sostup osstup ssotup ssotup osstup sostup tossup otssup tsosup stosup ostsup sotsup stusop tsusop sutsop ustsop tussop utssop stsuop tssuop sstuop sstuop tssuop stsuop sustop usstop ssutop ssutop usstop sustop tussop utssop tsusop stusop ustsop sutsop soustp osustp suostp usostp ousstp uosstp sosutp ossutp ssoutp ssoutp ossutp sosutp susotp ussotp ssuotp ssuotp ussotp susotp ousstp uosstp osustp soustp usostp suostp toussp otussp tuossp utossp outssp uotssp tosusp otsusp tsousp stousp ostusp sotusp tusosp utsosp tsuosp stuosp ustosp sutosp oustsp uostsp osutsp soutsp usotsp suotsp stopsu tsopsu sotpsu ostpsu tospsu otspsu stposu tsposu sptosu pstosu tpsosu ptsosu soptsu osptsu spotsu psotsu opstsu postsu topssu otpssu tpossu ptossu optssu potssu stospu tsospu sotspu ostspu tosspu otsspu stsopu tssopu sstopu sstopu tssopu stsopu sostpu osstpu ssotpu ssotpu osstpu sostpu tosspu otsspu tsospu stospu ostspu sotspu stpsou tspsou sptsou pstsou tpssou ptssou stspou tsspou sstpou sstpou tsspou stspou spstou psstou ssptou ssptou psstou spstou tpssou ptssou tspsou stpsou pstsou sptsou sopstu ospstu spostu psostu opsstu posstu sosptu ossptu ssoptu ssoptu ossptu sosptu spsotu pssotu sspotu sspotu pssotu spsotu opsstu posstu ospstu sopstu psostu spostu topssu otpssu tpossu ptossu optssu potssu tospsu otspsu tsopsu stopsu ostpsu sotpsu tpsosu ptsosu tsposu stposu pstosu sptosu opstsu postsu osptsu soptsu psotsu spotsu stupso tsupso sutpso ustpso tuspso utspso stpuso tspuso sptuso pstuso tpsuso ptsuso suptso usptso sputso psutso upstso pustso tupsso utpsso tpusso ptusso uptsso putsso stuspo tsuspo sutspo ustspo tusspo utsspo stsupo tssupo sstupo sstupo tssupo stsupo sustpo usstpo ssutpo ssutpo usstpo sustpo tusspo utsspo tsuspo stuspo ustspo sutspo stpsuo tspsuo sptsuo pstsuo tpssuo ptssuo stspuo tsspuo sstpuo sstpuo tsspuo stspuo spstuo psstuo ssptuo ssptuo psstuo spstuo tpssuo ptssuo tspsuo stpsuo pstsuo sptsuo supsto uspsto spusto psusto upssto pussto suspto usspto ssupto ssupto usspto suspto spsuto pssuto ssputo ssputo pssuto spsuto upssto pussto uspsto supsto psusto spusto tupsso utpsso tpusso ptusso uptsso putsso tuspso utspso tsupso stupso ustpso sutpso tpsuso ptsuso tspuso stpuso pstuso sptuso upstso pustso usptso suptso psutso sputso soupst osupst suopst usopst ouspst uospst sopust ospust spoust psoust opsust posust supost uspost spuost psuost upsost pusost oupsst uopsst opusst pousst uposst puosst souspt osuspt suospt usospt ousspt uosspt sosupt ossupt ssoupt ssoupt ossupt sosupt susopt ussopt ssuopt ssuopt ussopt susopt ousspt uosspt osuspt souspt usospt suospt sopsut ospsut sposut psosut opssut possut sosput ossput ssoput ssoput ossput sosput spsout pssout sspout sspout pssout spsout opssut possut ospsut sopsut psosut sposut supsot uspsot spusot psusot upssot pussot suspot usspot ssupot ssupot usspot suspot spsuot pssuot sspuot sspuot pssuot spsuot upssot pussot uspsot supsot psusot spusot oupsst uopsst opusst pousst uposst puosst ouspst uospst osupst soupst usopst suopst opsust posust ospust sopust psoust spoust upsost pusost uspost supost psuost spuost toupss otupss tuopss utopss outpss uotpss topuss otpuss tpouss ptouss optuss potuss tuposs utposs tpuoss ptuoss uptoss putoss ouptss uoptss oputss poutss upotss puotss tousps otusps tuosps utosps outsps uotsps tosups otsups tsoups stoups ostups sotups tusops utsops tsuops stuops ustops sutops oustps uostps osutps soutps usotps suotps topsus otpsus tposus ptosus optsus potsus tospus otspus tsopus stopus ostpus sotpus tpsous ptsous tspous stpous pstous sptous opstus postus osptus soptus psotus spotus tupsos utpsos tpusos ptusos uptsos putsos tuspos utspos tsupos stupos ustpos sutpos tpsuos ptsuos tspuos stpuos pstuos sptuos upstos pustos usptos suptos psutos sputos oupsts uopsts opusts pousts uposts puosts ouspts uospts osupts soupts usopts suopts opsuts posuts osputs soputs psouts spouts upsots pusots uspots supots psuots spuots
Note: these 'words' (valid or invalid) are all the permutations of the word stoups. These words are obtained by scrambling the letters in stoups.