lisle ilsle lsile slile islle sille lilse illse llise llise illse lilse lslie sllie llsie llsie sllie lslie islle sille ilsle lisle slile lsile lisel ilsel lsiel sliel islel silel liesl ilesl leisl elisl ielsl eilsl lseil sleil lesil elsil selil eslil isell siell iesll eisll seill esill liles illes llies llies illes liles liels ilels leils elils iells eills lleis lleis lelis ellis lelis ellis ilels liels iells eills leils elils lslei sllei llsei llsei sllei lslei lseli sleli lesli elsli selli eslli llesi llesi lelsi ellsi lelsi ellsi sleli lseli selli eslli lesli elsli islel silel ilsel lisel sliel lsiel isell siell iesll eisll seill esill ilesl liesl ielsl eilsl leisl elisl sleil lseil selil eslil lesil elsil
Note: these 'words' (valid or invalid) are all the permutations of the word lisle. These words are obtained by scrambling the letters in lisle.