light ilght lgiht gliht iglht gilht lihgt ilhgt lhigt hligt ihlgt hilgt lghit glhit lhgit hlgit ghlit hglit ighlt gihlt ihglt higlt ghilt hgilt ligth ilgth lgith glith iglth gilth litgh iltgh ltigh tligh itlgh tilgh lgtih gltih ltgih tlgih gtlih tglih igtlh gitlh itglh tiglh gtilh tgilh lihtg ilhtg lhitg hlitg ihltg hiltg lithg ilthg ltihg tlihg itlhg tilhg lhtig hltig lthig tlhig htlig thlig ihtlg hitlg ithlg tihlg htilg thilg lghti glhti lhgti hlgti ghlti hglti lgthi glthi ltghi tlghi gtlhi tglhi lhtgi hltgi lthgi tlhgi htlgi thlgi ghtli hgtli gthli tghli htgli thgli ightl gihtl ihgtl higtl ghitl hgitl igthl githl itghl tighl gtihl tgihl ihtgl hitgl ithgl tihgl htigl thigl ghtil hgtil gthil tghil htgil thgil
Note: these 'words' (valid or invalid) are all the permutations of the word light. These words are obtained by scrambling the letters in light.