whup hwup wuhp uwhp huwp uhwp whpu hwpu wphu pwhu hpwu phwu wuph uwph wpuh pwuh upwh puwh hupw uhpw hpuw phuw uphw puhw
Note: these 'words' (valid or invalid) are all the permutations of the word whup. These words are obtained by scrambling the letters in whup.