ottar totar ottar totar ttoar ttoar otatr toatr oattr aottr taotr atotr otatr toatr oattr aottr taotr atotr ttaor ttaor tator attor tator attor ottra totra ottra totra ttora ttora otrta torta ortta rotta trota rtota otrta torta ortta rotta trota rtota ttroa ttroa trtoa rttoa trtoa rttoa otart toart oatrt aotrt taort atort otrat torat ortat rotat troat rtoat oartt aortt oratt roatt arott raott tarot atrot traot rtaot artot ratot otart toart oatrt aotrt taort atort otrat torat ortat rotat troat rtoat oartt aortt oratt roatt arott raott tarot atrot traot rtaot artot ratot ttaro ttaro tatro attro tatro attro ttrao ttrao trtao rttao trtao rttao tarto atrto trato rtato artto ratto tarto atrto trato rtato artto ratto
Note: these 'words' (valid or invalid) are all the permutations of the word ottar. These words are obtained by scrambling the letters in ottar.