kuris ukris kruis rkuis urkis rukis kuirs ukirs kiurs ikurs uikrs iukrs krius rkius kirus ikrus rikus irkus uriks ruiks uirks iurks riuks iruks kursi ukrsi krusi rkusi urksi ruksi kusri uksri ksuri skuri uskri sukri krsui rksui ksrui skrui rskui srkui urski ruski usrki surki rsuki sruki kuisr ukisr kiusr ikusr uiksr iuksr kusir uksir ksuir skuir uskir sukir kisur iksur ksiur skiur iskur sikur uiskr iuskr usikr suikr isukr siukr krisu rkisu kirsu ikrsu riksu irksu krsiu rksiu ksriu skriu rskiu srkiu kisru iksru ksiru skiru iskru sikru risku irsku rsiku sriku isrku sirku urisk ruisk uirsk iursk riusk irusk ursik rusik usrik surik rsuik sruik uisrk iusrk usirk suirk isurk siurk risuk irsuk rsiuk sriuk isruk siruk
Note: these 'words' (valid or invalid) are all the permutations of the word kuris. These words are obtained by scrambling the letters in kuris.