cockup occkup ccokup ccokup occkup cockup cokcup ockcup ckocup kcocup okccup koccup cckoup cckoup ckcoup kccoup ckcoup kccoup ockcup cokcup okccup koccup ckocup kcocup cocukp occukp ccoukp ccoukp occukp cocukp couckp ocuckp cuockp ucockp oucckp uocckp ccuokp ccuokp cucokp uccokp cucokp uccokp ocuckp couckp oucckp uocckp cuockp ucockp cokucp ockucp ckoucp kcoucp okcucp kocucp coukcp ocukcp cuokcp ucokcp ouckcp uockcp ckuocp kcuocp cukocp uckocp kucocp ukcocp okuccp kouccp oukccp uokccp kuoccp ukoccp cckuop cckuop ckcuop kccuop ckcuop kccuop ccukop ccukop cuckop ucckop cuckop ucckop ckucop kcucop cukcop uckcop kuccop ukccop ckucop kcucop cukcop uckcop kuccop ukccop ockucp cokucp okcucp kocucp ckoucp kcoucp ocukcp coukcp ouckcp uockcp cuokcp ucokcp okuccp kouccp oukccp uokccp kuoccp ukoccp ckuocp kcuocp cukocp uckocp kucocp ukcocp cockpu occkpu ccokpu ccokpu occkpu cockpu cokcpu ockcpu ckocpu kcocpu okccpu koccpu cckopu cckopu ckcopu kccopu ckcopu kccopu ockcpu cokcpu okccpu koccpu ckocpu kcocpu cocpku occpku ccopku ccopku occpku cocpku copcku ocpcku cpocku pcocku opccku poccku ccpoku ccpoku cpcoku pccoku cpcoku pccoku ocpcku copcku opccku poccku cpocku pcocku cokpcu ockpcu ckopcu kcopcu okcpcu kocpcu copkcu ocpkcu cpokcu pcokcu opckcu pockcu ckpocu kcpocu cpkocu pckocu kpcocu pkcocu okpccu kopccu opkccu pokccu kpoccu pkoccu cckpou cckpou ckcpou kccpou ckcpou kccpou ccpkou ccpkou cpckou pcckou cpckou pcckou ckpcou kcpcou cpkcou pckcou kpccou pkccou ckpcou kcpcou cpkcou pckcou kpccou pkccou ockpcu cokpcu okcpcu kocpcu ckopcu kcopcu ocpkcu copkcu opckcu pockcu cpokcu pcokcu okpccu kopccu opkccu pokccu kpoccu pkoccu ckpocu kcpocu cpkocu pckocu kpcocu pkcocu cocupk occupk ccoupk ccoupk occupk cocupk coucpk ocucpk cuocpk ucocpk ouccpk uoccpk ccuopk ccuopk cucopk uccopk cucopk uccopk ocucpk coucpk ouccpk uoccpk cuocpk ucocpk cocpuk occpuk ccopuk ccopuk occpuk cocpuk copcuk ocpcuk cpocuk pcocuk opccuk poccuk ccpouk ccpouk cpcouk pccouk cpcouk pccouk ocpcuk copcuk opccuk poccuk cpocuk pcocuk coupck ocupck cuopck ucopck oucpck uocpck copuck ocpuck cpouck pcouck opcuck pocuck cupock ucpock cpuock pcuock upcock pucock oupcck uopcck opucck poucck upocck puocck ccupok ccupok cucpok uccpok cucpok uccpok ccpuok ccpuok cpcuok pccuok cpcuok pccuok cupcok ucpcok cpucok pcucok upccok puccok cupcok ucpcok cpucok pcucok upccok puccok ocupck coupck oucpck uocpck cuopck ucopck ocpuck copuck opcuck pocuck cpouck pcouck oupcck uopcck opucck poucck upocck puocck cupock ucpock cpuock pcuock upcock pucock cokupc ockupc ckoupc kcoupc okcupc kocupc coukpc ocukpc cuokpc ucokpc ouckpc uockpc ckuopc kcuopc cukopc uckopc kucopc ukcopc okucpc koucpc oukcpc uokcpc kuocpc ukocpc cokpuc ockpuc ckopuc kcopuc okcpuc kocpuc copkuc ocpkuc cpokuc pcokuc opckuc pockuc ckpouc kcpouc cpkouc pckouc kpcouc pkcouc okpcuc kopcuc opkcuc pokcuc kpocuc pkocuc coupkc ocupkc cuopkc ucopkc oucpkc uocpkc copukc ocpukc cpoukc pcoukc opcukc pocukc cupokc ucpokc cpuokc pcuokc upcokc pucokc oupckc uopckc opuckc pouckc upockc puockc ckupoc kcupoc cukpoc uckpoc kucpoc ukcpoc ckpuoc kcpuoc cpkuoc pckuoc kpcuoc pkcuoc cupkoc ucpkoc cpukoc pcukoc upckoc puckoc kupcoc ukpcoc kpucoc pkucoc upkcoc pukcoc okupcc koupcc oukpcc uokpcc kuopcc ukopcc okpucc kopucc opkucc pokucc kpoucc pkoucc oupkcc uopkcc opukcc poukcc upokcc puokcc kupocc ukpocc kpuocc pkuocc upkocc pukocc cckupo cckupo ckcupo kccupo ckcupo kccupo ccukpo ccukpo cuckpo ucckpo cuckpo ucckpo ckucpo kcucpo cukcpo uckcpo kuccpo ukccpo ckucpo kcucpo cukcpo uckcpo kuccpo ukccpo cckpuo cckpuo ckcpuo kccpuo ckcpuo kccpuo ccpkuo ccpkuo cpckuo pcckuo cpckuo pcckuo ckpcuo kcpcuo cpkcuo pckcuo kpccuo pkccuo ckpcuo kcpcuo cpkcuo pckcuo kpccuo pkccuo ccupko ccupko cucpko uccpko cucpko uccpko ccpuko ccpuko cpcuko pccuko cpcuko pccuko cupcko ucpcko cpucko pcucko upccko puccko cupcko ucpcko cpucko pcucko upccko puccko ckupco kcupco cukpco uckpco kucpco ukcpco ckpuco kcpuco cpkuco pckuco kpcuco pkcuco cupkco ucpkco cpukco pcukco upckco puckco kupcco ukpcco kpucco pkucco upkcco pukcco ckupco kcupco cukpco uckpco kucpco ukcpco ckpuco kcpuco cpkuco pckuco kpcuco pkcuco cupkco ucpkco cpukco pcukco upckco puckco kupcco ukpcco kpucco pkucco upkcco pukcco ockupc cokupc okcupc kocupc ckoupc kcoupc ocukpc coukpc ouckpc uockpc cuokpc ucokpc okucpc koucpc oukcpc uokcpc kuocpc ukocpc ckuopc kcuopc cukopc uckopc kucopc ukcopc ockpuc cokpuc okcpuc kocpuc ckopuc kcopuc ocpkuc copkuc opckuc pockuc cpokuc pcokuc okpcuc kopcuc opkcuc pokcuc kpocuc pkocuc ckpouc kcpouc cpkouc pckouc kpcouc pkcouc ocupkc coupkc oucpkc uocpkc cuopkc ucopkc ocpukc copukc opcukc pocukc cpoukc pcoukc oupckc uopckc opuckc pouckc upockc puockc cupokc ucpokc cpuokc pcuokc upcokc pucokc okupcc koupcc oukpcc uokpcc kuopcc ukopcc okpucc kopucc opkucc pokucc kpoucc pkoucc oupkcc uopkcc opukcc poukcc upokcc puokcc kupocc ukpocc kpuocc pkuocc upkocc pukocc ckupoc kcupoc cukpoc uckpoc kucpoc ukcpoc ckpuoc kcpuoc cpkuoc pckuoc kpcuoc pkcuoc cupkoc ucpkoc cpukoc pcukoc upckoc puckoc kupcoc ukpcoc kpucoc pkucoc upkcoc pukcoc
Note: these 'words' (valid or invalid) are all the permutations of the word cockup. These words are obtained by scrambling the letters in cockup.