riles irles rlies lries ilres lires riels irels reils erils ierls eirls rleis lreis relis erlis leris elris ilers liers ielrs eilrs leirs elirs rilse irlse rlise lrise ilrse lirse risle irsle rsile srile isrle sirle rlsie lrsie rslie srlie lsrie slrie ilsre lisre islre silre lsire slire riesl iresl reisl erisl iersl eirsl risel irsel rsiel sriel isrel sirel resil ersil rseil sreil esril seril iesrl eisrl iserl sierl esirl seirl rlesi lresi relsi erlsi lersi elrsi rlsei lrsei rslei srlei lsrei slrei resli ersli rseli sreli esrli serli lesri elsri lseri sleri eslri selri ilesr liesr ielsr eilsr leisr elisr ilser liser isler siler lsier slier ieslr eislr iselr sielr esilr seilr lesir elsir lseir sleir eslir selir
Note: these 'words' (valid or invalid) are all the permutations of the word riles. These words are obtained by scrambling the letters in riles.