easer aeser esaer seaer aseer saeer eaesr aeesr eeasr eeasr aeesr eaesr esear seear eesar eesar seear esear aseer saeer aeser easer seaer esaer easre aesre esare seare asere saere earse aerse erase rease arese raese esrae serae ersae resae sreae rseae asree saree arsee rasee sraee rsaee eaers aeers eears eears aeers eaers eares aeres eraes reaes arees raees eeras eeras ereas reeas ereas reeas aeres eares arees raees eraes reaes esera seera eesra eesra seera esera esrea serea ersea resea sreea rseea eersa eersa eresa reesa eresa reesa serea esrea sreea rseea ersea resea asere saere aesre easre seare esare asree saree arsee rasee sraee rsaee aerse earse arese raese erase rease serae esrae sreae rseae ersae resae
Note: these 'words' (valid or invalid) are all the permutations of the word easer. These words are obtained by scrambling the letters in easer.