huvp uhvp hvup vhup uvhp vuhp hupv uhpv hpuv phuv uphv puhv hvpu vhpu hpvu phvu vphu pvhu uvph vuph upvh puvh vpuh pvuh
Note: these 'words' (valid or invalid) are all the permutations of the word huvp. These words are obtained by scrambling the letters in huvp.