rille irlle rlile lrile ilrle lirle rille irlle rlile lrile ilrle lirle rllie lrlie rllie lrlie llrie llrie illre lilre illre lilre llire llire rilel irlel rliel lriel ilrel lirel riell irell reill erill ierll eirll rleil lreil relil erlil leril elril ilerl lierl ielrl eilrl leirl elirl rilel irlel rliel lriel ilrel lirel riell irell reill erill ierll eirll rleil lreil relil erlil leril elril ilerl lierl ielrl eilrl leirl elirl rllei lrlei rllei lrlei llrei llrei rleli lreli relli erlli lerli elrli rleli lreli relli erlli lerli elrli lleri lleri lelri ellri lelri ellri iller liler iller liler llier llier ilelr lielr iellr eillr leilr elilr ilelr lielr iellr eillr leilr elilr lleir lleir lelir ellir lelir ellir
Note: these 'words' (valid or invalid) are all the permutations of the word rille. These words are obtained by scrambling the letters in rille.