illth lilth illth lilth llith llith iltlh litlh itllh tillh ltilh tlilh iltlh litlh itllh tillh ltilh tlilh lltih lltih ltlih tllih ltlih tllih illht lilht illht lilht lliht lliht ilhlt lihlt ihllt hillt lhilt hlilt ilhlt lihlt ihllt hillt lhilt hlilt llhit llhit lhlit hllit lhlit hllit ilthl lithl itlhl tilhl ltihl tlihl ilhtl lihtl ihltl hiltl lhitl hlitl ithll tihll ihtll hitll thill htill lthil tlhil lhtil hltil thlil htlil ilthl lithl itlhl tilhl ltihl tlihl ilhtl lihtl ihltl hiltl lhitl hlitl ithll tihll ihtll hitll thill htill lthil tlhil lhtil hltil thlil htlil llthi llthi ltlhi tllhi ltlhi tllhi llhti llhti lhlti hllti lhlti hllti lthli tlhli lhtli hltli thlli htlli lthli tlhli lhtli hltli thlli htlli
Note: these 'words' (valid or invalid) are all the permutations of the word illth. These words are obtained by scrambling the letters in illth.