flaut lfaut falut aflut lafut alfut fluat lfuat fulat uflat lufat ulfat fault afult fualt ufalt auflt uaflt lauft aluft luaft ulaft aulft ualft flatu lfatu faltu afltu laftu alftu fltau lftau ftlau tflau ltfau tlfau fatlu aftlu ftalu tfalu atflu taflu latfu altfu ltafu tlafu atlfu talfu fluta lfuta fulta uflta lufta ulfta fltua lftua ftlua tflua ltfua tlfua futla uftla ftula tfula utfla tufla lutfa ultfa ltufa tlufa utlfa tulfa fautl afutl fuatl ufatl auftl uaftl fatul aftul ftaul tfaul atful taful futal uftal ftual tfual utfal tufal autfl uatfl atufl taufl utafl tuafl lautf alutf luatf ulatf aultf ualtf latuf altuf ltauf tlauf atluf taluf lutaf ultaf ltuaf tluaf utlaf tulaf autlf uatlf atulf taulf utalf tualf
Note: these 'words' (valid or invalid) are all the permutations of the word flaut. These words are obtained by scrambling the letters in flaut.