logoff olgoff lgooff glooff ogloff goloff loogff ologff loogff ologff oolgff oolgff lgooff glooff logoff olgoff goloff ogloff ogolff goolff ooglff ooglff goolff ogolff logfof olgfof lgofof glofof oglfof golfof lofgof olfgof lfogof flogof oflgof folgof lgfoof glfoof lfgoof flgoof gfloof fgloof ogflof goflof ofglof foglof gfolof fgolof loofgf olofgf loofgf olofgf oolfgf oolfgf lofogf olfogf lfoogf floogf oflogf fologf lofogf olfogf lfoogf floogf oflogf fologf ooflgf ooflgf ofolgf foolgf ofolgf foolgf lgofof glofof logfof olgfof golfof oglfof lgfoof glfoof lfgoof flgoof gfloof fgloof lofgof olfgof lfogof flogof oflgof folgof goflof ogflof gfolof fgolof ofglof foglof ogoflf gooflf oogflf oogflf gooflf ogoflf ogfolf gofolf ofgolf fogolf gfoolf fgoolf oofglf oofglf ofoglf fooglf ofoglf fooglf gofolf ogfolf gfoolf fgoolf ofgolf fogolf logoff olgoff lgooff glooff ogloff goloff loogff ologff loogff ologff oolgff oolgff lgooff glooff logoff olgoff goloff ogloff ogolff goolff ooglff ooglff goolff ogolff logfof olgfof lgofof glofof oglfof golfof lofgof olfgof lfogof flogof oflgof folgof lgfoof glfoof lfgoof flgoof gfloof fgloof ogflof goflof ofglof foglof gfolof fgolof loofgf olofgf loofgf olofgf oolfgf oolfgf lofogf olfogf lfoogf floogf oflogf fologf lofogf olfogf lfoogf floogf oflogf fologf ooflgf ooflgf ofolgf foolgf ofolgf foolgf lgofof glofof logfof olgfof golfof oglfof lgfoof glfoof lfgoof flgoof gfloof fgloof lofgof olfgof lfogof flogof oflgof folgof goflof ogflof gfolof fgolof ofglof foglof ogoflf gooflf oogflf oogflf gooflf ogoflf ogfolf gofolf ofgolf fogolf gfoolf fgoolf oofglf oofglf ofoglf fooglf ofoglf fooglf gofolf ogfolf gfoolf fgoolf ofgolf fogolf logffo olgffo lgoffo gloffo oglffo golffo lofgfo olfgfo lfogfo flogfo oflgfo folgfo lgfofo glfofo lfgofo flgofo gflofo fglofo ogflfo goflfo ofglfo foglfo gfolfo fgolfo logffo olgffo lgoffo gloffo oglffo golffo lofgfo olfgfo lfogfo flogfo oflgfo folgfo lgfofo glfofo lfgofo flgofo gflofo fglofo ogflfo goflfo ofglfo foglfo gfolfo fgolfo loffgo olffgo lfofgo flofgo oflfgo folfgo loffgo olffgo lfofgo flofgo oflfgo folfgo lffogo flfogo lffogo flfogo fflogo fflogo offlgo foflgo offlgo foflgo ffolgo ffolgo lgffoo glffoo lfgfoo flgfoo gflfoo fglfoo lgffoo glffoo lfgfoo flgfoo gflfoo fglfoo lffgoo flfgoo lffgoo flfgoo fflgoo fflgoo gffloo fgfloo gffloo fgfloo ffgloo ffgloo ogfflo gofflo ofgflo fogflo gfoflo fgoflo ogfflo gofflo ofgflo fogflo gfoflo fgoflo offglo fofglo offglo fofglo ffoglo ffoglo gffolo fgfolo gffolo fgfolo ffgolo ffgolo looffg oloffg looffg oloffg oolffg oolffg lofofg olfofg lfoofg floofg oflofg folofg lofofg olfofg lfoofg floofg oflofg folofg ooflfg ooflfg ofolfg foolfg ofolfg foolfg looffg oloffg looffg oloffg oolffg oolffg lofofg olfofg lfoofg floofg oflofg folofg lofofg olfofg lfoofg floofg oflofg folofg ooflfg ooflfg ofolfg foolfg ofolfg foolfg loffog olffog lfofog flofog oflfog folfog loffog olffog lfofog flofog oflfog folfog lffoog flfoog lffoog flfoog ffloog ffloog offlog foflog offlog foflog ffolog ffolog loffog olffog lfofog flofog oflfog folfog loffog olffog lfofog flofog oflfog folfog lffoog flfoog lffoog flfoog ffloog ffloog offlog foflog offlog foflog ffolog ffolog oofflg oofflg ofoflg fooflg ofoflg fooflg oofflg oofflg ofoflg fooflg ofoflg fooflg offolg fofolg offolg fofolg ffoolg ffoolg offolg fofolg offolg fofolg ffoolg ffoolg lgoffo gloffo logffo olgffo golffo oglffo lgfofo glfofo lfgofo flgofo gflofo fglofo lofgfo olfgfo lfogfo flogfo oflgfo folgfo goflfo ogflfo gfolfo fgolfo ofglfo foglfo lgoffo gloffo logffo olgffo golffo oglffo lgfofo glfofo lfgofo flgofo gflofo fglofo lofgfo olfgfo lfogfo flogfo oflgfo folgfo goflfo ogflfo gfolfo fgolfo ofglfo foglfo lgffoo glffoo lfgfoo flgfoo gflfoo fglfoo lgffoo glffoo lfgfoo flgfoo gflfoo fglfoo lffgoo flfgoo lffgoo flfgoo fflgoo fflgoo gffloo fgfloo gffloo fgfloo ffgloo ffgloo loffgo olffgo lfofgo flofgo oflfgo folfgo loffgo olffgo lfofgo flofgo oflfgo folfgo lffogo flfogo lffogo flfogo fflogo fflogo offlgo foflgo offlgo foflgo ffolgo ffolgo gofflo ogfflo gfoflo fgoflo ofgflo fogflo gofflo ogfflo gfoflo fgoflo ofgflo fogflo gffolo fgfolo gffolo fgfolo ffgolo ffgolo offglo fofglo offglo fofglo ffoglo ffoglo ogoffl gooffl oogffl oogffl gooffl ogoffl ogfofl gofofl ofgofl fogofl gfoofl fgoofl oofgfl oofgfl ofogfl foogfl ofogfl foogfl gofofl ogfofl gfoofl fgoofl ofgofl fogofl ogoffl gooffl oogffl oogffl gooffl ogoffl ogfofl gofofl ofgofl fogofl gfoofl fgoofl oofgfl oofgfl ofogfl foogfl ofogfl foogfl gofofl ogfofl gfoofl fgoofl ofgofl fogofl ogffol goffol ofgfol fogfol gfofol fgofol ogffol goffol ofgfol fogfol gfofol fgofol offgol fofgol offgol fofgol ffogol ffogol gffool fgfool gffool fgfool ffgool ffgool ooffgl ooffgl ofofgl foofgl ofofgl foofgl ooffgl ooffgl ofofgl foofgl ofofgl foofgl offogl fofogl offogl fofogl ffoogl ffoogl offogl fofogl offogl fofogl ffoogl ffoogl goffol ogffol gfofol fgofol ofgfol fogfol goffol ogffol gfofol fgofol ofgfol fogfol gffool fgfool gffool fgfool ffgool ffgool offgol fofgol offgol fofgol ffogol ffogol
Note: these 'words' (valid or invalid) are all the permutations of the word logoff. These words are obtained by scrambling the letters in logoff.