krays rkays karys akrys rakys arkys kryas rkyas kyras ykras rykas yrkas kayrs akyrs kyars ykars aykrs yakrs rayks aryks ryaks yraks ayrks yarks krasy rkasy karsy akrsy raksy arksy krsay rksay ksray skray rskay srkay kasry aksry ksary skary askry sakry rasky arsky rsaky sraky asrky sarky krysa rkysa kyrsa ykrsa ryksa yrksa krsya rksya ksrya skrya rskya srkya kysra yksra ksyra skyra yskra sykra ryska yrska rsyka sryka ysrka syrka kaysr akysr kyasr ykasr ayksr yaksr kasyr aksyr ksayr skayr askyr sakyr kysar yksar ksyar skyar yskar sykar ayskr yaskr asykr saykr ysakr syakr raysk arysk ryask yrask ayrsk yarsk rasyk arsyk rsayk srayk asryk saryk rysak yrsak rsyak sryak ysrak syrak aysrk yasrk asyrk sayrk ysark syark
Note: these 'words' (valid or invalid) are all the permutations of the word krays. These words are obtained by scrambling the letters in krays.