rurps urrps rrups rrups urrps rurps ruprs urprs rpurs prurs uprrs purrs rrpus rrpus rprus prrus rprus prrus urprs ruprs uprrs purrs rpurs prurs rursp urrsp rrusp rrusp urrsp rursp rusrp ursrp rsurp srurp usrrp surrp rrsup rrsup rsrup srrup rsrup srrup ursrp rusrp usrrp surrp rsurp srurp rupsr urpsr rpusr prusr uprsr pursr ruspr urspr rsupr srupr usrpr surpr rpsur prsur rspur srpur psrur sprur upsrr pusrr usprr suprr psurr spurr rrpsu rrpsu rprsu prrsu rprsu prrsu rrspu rrspu rsrpu srrpu rsrpu srrpu rpsru prsru rspru srpru psrru sprru rpsru prsru rspru srpru psrru sprru urpsr rupsr uprsr pursr rpusr prusr urspr ruspr usrpr surpr rsupr srupr upsrr pusrr usprr suprr psurr spurr rpsur prsur rspur srpur psrur sprur
Note: these 'words' (valid or invalid) are all the permutations of the word rurps. These words are obtained by scrambling the letters in rurps.