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