gowf ogwf gwof wgof owgf wogf gofw ogfw gfow fgow ofgw fogw gwfo wgfo gfwo fgwo wfgo fwgo owfg wofg ofwg fowg wfog fwog
Note: these 'words' (valid or invalid) are all the permutations of the word gowf. These words are obtained by scrambling the letters in gowf.