ahigh haigh aihgh iahgh hiagh ihagh ahgih hagih aghih gahih hgaih ghaih aighh iaghh agihh gaihh igahh giahh higah ihgah hgiah ghiah ighah gihah ahihg haihg aihhg iahhg hiahg ihahg ahhig hahig ahhig hahig hhaig hhaig aihhg iahhg ahihg haihg ihahg hiahg hihag ihhag hhiag hhiag ihhag hihag ahghi haghi aghhi gahhi hgahi ghahi ahhgi hahgi ahhgi hahgi hhagi hhagi aghhi gahhi ahghi haghi ghahi hgahi hghai ghhai hhgai hhgai ghhai hghai aighh iaghh agihh gaihh igahh giahh aihgh iahgh ahigh haigh ihagh hiagh aghih gahih ahgih hagih ghaih hgaih ighah gihah ihgah higah ghiah hgiah higha ihgha hgiha ghiha ighha gihha hihga ihhga hhiga hhiga ihhga hihga hghia ghhia hhgia hhgia ghhia hghia ighha gihha ihgha higha ghiha hgiha
Note: these 'words' (valid or invalid) are all the permutations of the word ahigh. These words are obtained by scrambling the letters in ahigh.