sewin eswin swein wsein ewsin wesin seiwn esiwn siewn isewn eiswn ieswn swien wsien siwen iswen wisen iwsen ewisn weisn eiwsn iewsn wiesn iwesn sewni eswni sweni wseni ewsni wesni senwi esnwi snewi nsewi enswi neswi swnei wsnei snwei nswei wnsei nwsei ewnsi wensi enwsi newsi wnesi nwesi seinw esinw sienw isenw eisnw iesnw seniw esniw sneiw nseiw ensiw nesiw sinew isnew sniew nsiew insew nisew einsw iensw enisw neisw inesw niesw swine wsine siwne iswne wisne iwsne swnie wsnie snwie nswie wnsie nwsie sinwe isnwe sniwe nsiwe inswe niswe winse iwnse wnise nwise inwse niwse ewins weins eiwns iewns wiens iwens ewnis wenis enwis newis wneis nweis einws ienws eniws neiws inews niews wines iwnes wnies nwies inwes niwes
Note: these 'words' (valid or invalid) are all the permutations of the word sewin. These words are obtained by scrambling the letters in sewin.