ratoo artoo rtaoo traoo atroo taroo raoto aroto roato orato aorto oarto rtoao troao rotao ortao torao otrao atoro taoro aotro oatro toaro otaro ratoo artoo rtaoo traoo atroo taroo raoto aroto roato orato aorto oarto rtoao troao rotao ortao torao otrao atoro taoro aotro oatro toaro otaro raoot aroot roaot oraot aorot oarot raoot aroot roaot oraot aorot oarot rooat oroat rooat oroat oorat oorat aoort oaort aoort oaort ooart ooart rtooa trooa rotoa ortoa toroa otroa rtooa trooa rotoa ortoa toroa otroa roota orota roota orota oorta oorta toora otora toora otora ootra ootra atoor taoor aotor oator toaor otaor atoor taoor aotor oator toaor otaor aootr oaotr aootr oaotr ooatr ooatr tooar otoar tooar otoar ootar ootar
Note: these 'words' (valid or invalid) are all the permutations of the word ratoo. These words are obtained by scrambling the letters in ratoo.