oofta oofta ofota foota ofota foota ootfa ootfa otofa toofa otofa toofa oftoa fotoa otfoa tofoa ftooa tfooa oftoa fotoa otfoa tofoa ftooa tfooa oofat oofat ofoat fooat ofoat fooat ooaft ooaft oaoft aooft oaoft aooft ofaot foaot oafot aofot faoot afoot ofaot foaot oafot aofot faoot afoot ootaf ootaf otoaf tooaf otoaf tooaf ooatf ooatf oaotf aootf oaotf aootf otaof toaof oatof aotof taoof atoof otaof toaof oatof aotof taoof atoof oftao fotao otfao tofao ftoao tfoao ofato foato oafto aofto faoto afoto otafo toafo oatfo aotfo taofo atofo ftaoo tfaoo fatoo aftoo tafoo atfoo oftao fotao otfao tofao ftoao tfoao ofato foato oafto aofto faoto afoto otafo toafo oatfo aotfo taofo atofo ftaoo tfaoo fatoo aftoo tafoo atfoo
Note: these 'words' (valid or invalid) are all the permutations of the word oofta. These words are obtained by scrambling the letters in oofta.