luffa ulffa lfufa flufa uflfa fulfa luffa ulffa lfufa flufa uflfa fulfa lffua flfua lffua flfua fflua fflua uffla fufla uffla fufla ffula ffula lufaf ulfaf lfuaf fluaf uflaf fulaf luaff ulaff lauff aluff ualff aulff lfauf flauf lafuf alfuf faluf afluf ufalf fualf uaflf auflf faulf afulf lufaf ulfaf lfuaf fluaf uflaf fulaf luaff ulaff lauff aluff ualff aulff lfauf flauf lafuf alfuf faluf afluf ufalf fualf uaflf auflf faulf afulf lffau flfau lffau flfau fflau fflau lfafu flafu laffu alffu falfu aflfu lfafu flafu laffu alffu falfu aflfu ffalu ffalu faflu afflu faflu afflu uffal fufal uffal fufal ffual ffual ufafl fuafl uaffl auffl faufl afufl ufafl fuafl uaffl auffl faufl afufl ffaul ffaul faful afful faful afful
Note: these 'words' (valid or invalid) are all the permutations of the word luffa. These words are obtained by scrambling the letters in luffa.