testa etsta tseta steta estta setta tetsa ettsa ttesa ttesa ettsa tetsa tstea sttea ttsea ttsea sttea tstea estta setta etsta testa steta tseta tesat etsat tseat steat estat setat teast etast taest atest eatst aetst tsaet staet taset atset satet astet esatt seatt eastt aestt saett asett tetas ettas tteas tteas ettas tetas teats etats taets atets eatts aetts ttaes ttaes tates attes tates attes etats teats eatts aetts taets atets tstae sttae ttsae ttsae sttae tstae tsate state taste atste satte astte ttase ttase tatse attse tatse attse state tsate satte astte taste atste estat setat etsat tesat steat tseat esatt seatt eastt aestt saett asett etast teast eatst aetst taest atest staet tsaet satet astet taset atset
Note: these 'words' (valid or invalid) are all the permutations of the word testa. These words are obtained by scrambling the letters in testa.