rasst arsst rsast srast asrst sarst rasst arsst rsast srast asrst sarst rssat srsat rssat srsat ssrat ssrat assrt sasrt assrt sasrt ssart ssart rasts arsts rsats srats asrts sarts ratss artss rtass trass atrss tarss rstas srtas rtsas trsas stras tsras astrs satrs atsrs tasrs stars tsars rasts arsts rsats srats asrts sarts ratss artss rtass trass atrss tarss rstas srtas rtsas trsas stras tsras astrs satrs atsrs tasrs stars tsars rssta srsta rssta srsta ssrta ssrta rstsa srtsa rtssa trssa strsa tsrsa rstsa srtsa rtssa trssa strsa tsrsa sstra sstra stsra tssra stsra tssra asstr sastr asstr sastr ssatr ssatr astsr satsr atssr tassr stasr tsasr astsr satsr atssr tassr stasr tsasr sstar sstar stsar tssar stsar tssar
Note: these 'words' (valid or invalid) are all the permutations of the word rasst. These words are obtained by scrambling the letters in rasst.