twilt wtilt tiwlt itwlt witlt iwtlt twlit wtlit tlwit ltwit wltit lwtit tilwt itlwt tliwt ltiwt iltwt litwt wiltt iwltt wlitt lwitt ilwtt liwtt twitl wtitl tiwtl itwtl wittl iwttl twtil wttil ttwil ttwil wttil twtil titwl ittwl ttiwl ttiwl ittwl titwl wittl iwttl wtitl twitl itwtl tiwtl twlti wtlti tlwti ltwti wltti lwtti twtli wttli ttwli ttwli wttli twtli tltwi lttwi ttlwi ttlwi lttwi tltwi wltti lwtti wtlti twlti ltwti tlwti tiltw itltw tlitw ltitw ilttw littw titlw ittlw ttilw ttilw ittlw titlw tltiw lttiw ttliw ttliw lttiw tltiw ilttw littw itltw tiltw ltitw tlitw wiltt iwltt wlitt lwitt ilwtt liwtt witlt iwtlt wtilt twilt itwlt tiwlt wltit lwtit wtlit twlit ltwit tlwit iltwt litwt itlwt tilwt ltiwt tliwt
Note: these 'words' (valid or invalid) are all the permutations of the word twilt. These words are obtained by scrambling the letters in twilt.