fhop hfop fohp ofhp hofp ohfp fhpo hfpo fpho pfho hpfo phfo foph ofph fpoh pfoh opfh pofh hopf ohpf hpof phof ophf pohf
Note: these 'words' (valid or invalid) are all the permutations of the word fhop. These words are obtained by scrambling the letters in fhop.