pross rposs porss oprss ropss orpss prsos rpsos psros spros rspos srpos posrs opsrs psors spors osprs soprs rosps orsps rsops srops osrps sorps pross rposs porss oprss ropss orpss prsos rpsos psros spros rspos srpos posrs opsrs psors spors osprs soprs rosps orsps rsops srops osrps sorps prsso rpsso psrso sprso rspso srpso prsso rpsso psrso sprso rspso srpso pssro spsro pssro spsro sspro sspro rsspo srspo rsspo srspo ssrpo ssrpo possr opssr psosr sposr ospsr sopsr possr opssr psosr sposr ospsr sopsr pssor spsor pssor spsor sspor sspor osspr sospr osspr sospr ssopr ssopr rossp orssp rsosp srosp osrsp sorsp rossp orssp rsosp srosp osrsp sorsp rssop srsop rssop srsop ssrop ssrop ossrp sosrp ossrp sosrp ssorp ssorp
Note: these 'words' (valid or invalid) are all the permutations of the word pross. These words are obtained by scrambling the letters in pross.