fxaw xfaw faxw afxw xafw axfw fxwa xfwa fwxa wfxa xwfa wxfa fawx afwx fwax wfax awfx wafx xawf axwf xwaf wxaf awxf waxf
Note: these 'words' (valid or invalid) are all the permutations of the word fxaw. These words are obtained by scrambling the letters in fxaw.