chars hcars cahrs achrs hacrs ahcrs chras hcras crhas rchas hrcas rhcas carhs acrhs crahs rcahs archs rachs harcs ahrcs hracs rhacs arhcs rahcs chasr hcasr cahsr achsr hacsr ahcsr chsar hcsar cshar schar hscar shcar cashr acshr csahr scahr aschr sachr hascr ahscr hsacr shacr ashcr sahcr chrsa hcrsa crhsa rchsa hrcsa rhcsa chsra hcsra cshra schra hscra shcra crsha rcsha csrha scrha rscha srcha hrsca rhsca hsrca shrca rshca srhca carsh acrsh crash rcash arcsh racsh casrh acsrh csarh scarh ascrh sacrh crsah rcsah csrah scrah rscah srcah arsch rasch asrch sarch rsach srach harsc ahrsc hrasc rhasc arhsc rahsc hasrc ahsrc hsarc sharc ashrc sahrc hrsac rhsac hsrac shrac rshac srhac arshc rashc asrhc sarhc rsahc srahc
Note: these 'words' (valid or invalid) are all the permutations of the word chars. These words are obtained by scrambling the letters in chars.