nhais hnais nahis anhis hanis ahnis nhias hnias nihas inhas hinas ihnas naihs anihs niahs inahs ainhs ianhs hains ahins hians ihans aihns iahns nhasi hnasi nahsi anhsi hansi ahnsi nhsai hnsai nshai snhai hsnai shnai nashi anshi nsahi snahi asnhi sanhi hasni ahsni hsani shani ashni sahni nhisa hnisa nihsa inhsa hinsa ihnsa nhsia hnsia nshia snhia hsnia shnia nisha insha nsiha sniha isnha sinha hisna ihsna hsina shina ishna sihna naish anish niash inash ainsh iansh nasih ansih nsaih snaih asnih sanih nisah insah nsiah sniah isnah sinah aisnh iasnh asinh sainh isanh sianh haisn ahisn hiasn ihasn aihsn iahsn hasin ahsin hsain shain ashin sahin hisan ihsan hsian shian ishan sihan aishn iashn asihn saihn isahn siahn
Note: these 'words' (valid or invalid) are all the permutations of the word nhais. These words are obtained by scrambling the letters in nhais.