jaxy ajxy jxay xjay axjy xajy jayx ajyx jyax yjax ayjx yajx jxya xjya jyxa yjxa xyja yxja axyj xayj ayxj yaxj xyaj yxaj
Note: these 'words' (valid or invalid) are all the permutations of the word jaxy. These words are obtained by scrambling the letters in jaxy.