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