lirk ilrk lrik rlik irlk rilk likr ilkr lkir klir iklr kilr lrki rlki lkri klri rkli krli irkl rikl ikrl kirl rkil kril
Note: these 'words' (valid or invalid) are all the permutations of the word lirk. These words are obtained by scrambling the letters in lirk.