aisen iasen asien saien isaen siaen aiesn iaesn aeisn eaisn ieasn eiasn asein saein aesin easin seain esain isean siean iesan eisan seian esian aisne iasne asine saine isane siane ainse ianse anise naise inase niase asnie sanie ansie nasie snaie nsaie isnae sinae insae nisae sniae nsiae aiens iaens aeins eains ieans eians aines ianes anies naies inaes niaes aenis eanis aneis naeis enais neais ienas einas ineas nieas enias neias aseni saeni aesni easni seani esani asnei sanei ansei nasei snaei nsaei aensi eansi anesi naesi enasi neasi senai esnai sneai nseai ensai nesai isena siena iesna eisna seina esina isnea sinea insea nisea sniea nsiea iensa einsa inesa niesa enisa neisa senia esnia sneia nseia ensia nesia
Note: these 'words' (valid or invalid) are all the permutations of the word aisen. These words are obtained by scrambling the letters in aisen.