wersh ewrsh wresh rwesh erwsh rewsh wesrh ewsrh wserh swerh eswrh sewrh wrseh rwseh wsreh swreh rsweh srweh erswh reswh esrwh serwh rsewh srewh werhs ewrhs wrehs rwehs erwhs rewhs wehrs ewhrs whers hwers ehwrs hewrs wrhes rwhes whres hwres rhwes hrwes erhws rehws ehrws herws rhews hrews weshr ewshr wsehr swehr eswhr sewhr wehsr ewhsr whesr hwesr ehwsr hewsr wsher swher whser hwser shwer hswer eshwr sehwr ehswr heswr shewr hsewr wrshe rwshe wsrhe swrhe rswhe srwhe wrhse rwhse whrse hwrse rhwse hrwse wshre swhre whsre hwsre shwre hswre rshwe srhwe rhswe hrswe shrwe hsrwe ershw reshw esrhw serhw rsehw srehw erhsw rehsw ehrsw hersw rhesw hresw eshrw sehrw ehsrw hesrw sherw hserw rshew srhew rhsew hrsew shrew hsrew
Note: these 'words' (valid or invalid) are all the permutations of the word wersh. These words are obtained by scrambling the letters in wersh.