zaidy azidy ziady izady aizdy iazdy zadiy azdiy zdaiy dzaiy adziy daziy ziday izday zdiay dziay idzay dizay aidzy iadzy adizy daizy idazy diazy zaiyd aziyd ziayd izayd aizyd iazyd zayid azyid zyaid yzaid ayzid yazid ziyad izyad zyiad yziad iyzad yizad aiyzd iayzd ayizd yaizd iyazd yiazd zadyi azdyi zdayi dzayi adzyi dazyi zaydi azydi zyadi yzadi ayzdi yazdi zdyai dzyai zydai yzdai dyzai ydzai adyzi dayzi aydzi yadzi dyazi ydazi zidya izdya zdiya dziya idzya dizya ziyda izyda zyida yzida iyzda yizda zdyia dzyia zydia yzdia dyzia ydzia idyza diyza iydza yidza dyiza ydiza aidyz iadyz adiyz daiyz idayz diayz aiydz iaydz ayidz yaidz iyadz yiadz adyiz dayiz aydiz yadiz dyaiz ydaiz idyaz diyaz iydaz yidaz dyiaz ydiaz
Note: these 'words' (valid or invalid) are all the permutations of the word zaidy. These words are obtained by scrambling the letters in zaidy.