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