ivgh vigh igvh givh vgih gvih ivhg vihg ihvg hivg vhig hvig ighv gihv ihgv higv ghiv hgiv vghi gvhi vhgi hvgi ghvi hgvi
Note: these 'words' (valid or invalid) are all the permutations of the word ivgh. These words are obtained by scrambling the letters in ivgh.