nyaid ynaid nayid anyid yanid aynid nyiad yniad niyad inyad yinad iynad naiyd aniyd niayd inayd ainyd ianyd yaind ayind yiand iyand aiynd iaynd nyadi ynadi naydi anydi yandi ayndi nydai yndai ndyai dnyai ydnai dynai nadyi andyi ndayi dnayi adnyi danyi yadni aydni ydani dyani adyni dayni nyida ynida niyda inyda yinda iynda nydia yndia ndyia dnyia ydnia dynia nidya indya ndiya dniya idnya dinya yidna iydna ydina dyina idyna diyna naidy anidy niady inady aindy iandy nadiy andiy ndaiy dnaiy adniy daniy niday inday ndiay dniay idnay dinay aidny iadny adiny dainy idany diany yaidn ayidn yiadn iyadn aiydn iaydn yadin aydin ydain dyain adyin dayin yidan iydan ydian dyian idyan diyan aidyn iadyn adiyn daiyn idayn diayn
Note: these 'words' (valid or invalid) are all the permutations of the word nyaid. These words are obtained by scrambling the letters in nyaid.