rsxey srxey rxsey xrsey sxrey xsrey rsexy srexy resxy ersxy serxy esrxy rxesy xresy rexsy erxsy xersy exrsy sxery xsery sexry esxry xesry exsry rsxye srxye rxsye xrsye sxrye xsrye rsyxe sryxe rysxe yrsxe syrxe ysrxe rxyse xryse ryxse yrxse xyrse yxrse sxyre xsyre syxre ysxre xysre yxsre rseyx sreyx resyx ersyx seryx esryx rsyex sryex rysex yrsex syrex ysrex reysx erysx ryesx yresx eyrsx yersx seyrx esyrx syerx yserx eysrx yesrx rxeys xreys rexys erxys xerys exrys rxyes xryes ryxes yrxes xyres yxres reyxs eryxs ryexs yrexs eyrxs yerxs xeyrs exyrs xyers yxers eyxrs yexrs sxeyr xseyr sexyr esxyr xesyr exsyr sxyer xsyer syxer ysxer xyser yxser seyxr esyxr syexr ysexr eysxr yesxr xeysr exysr xyesr yxesr eyxsr yexsr
Note: these 'words' (valid or invalid) are all the permutations of the word rsxey. These words are obtained by scrambling the letters in rsxey.