haets ahets heats ehats aehts eahts hates ahtes htaes thaes athes tahes hetas ehtas hteas theas ethas tehas aeths eaths atehs taehs etahs teahs haest ahest heast ehast aehst eahst haset ahset hsaet shaet ashet sahet hesat ehsat hseat sheat eshat sehat aesht easht aseht saeht esaht seaht hatse ahtse htase thase athse tahse haste ahste hsate shate ashte sahte htsae thsae hstae shtae tshae sthae atshe tashe asthe sathe tsahe stahe hetsa ehtsa htesa thesa ethsa tehsa hesta ehsta hseta sheta eshta sehta htsea thsea hstea shtea tshea sthea etsha tesha estha setha tseha steha aetsh eatsh atesh taesh etash teash aesth easth aseth saeth esath seath atseh taseh asteh sateh tsaeh staeh etsah tesah estah setah tseah steah
Note: these 'words' (valid or invalid) are all the permutations of the word haets. These words are obtained by scrambling the letters in haets.