rushy urshy rsuhy sruhy usrhy surhy ruhsy urhsy rhusy hrusy uhrsy hursy rshuy srhuy rhsuy hrsuy shruy hsruy ushry suhry uhsry husry shury hsury rusyh ursyh rsuyh sruyh usryh suryh ruysh urysh ryush yrush uyrsh yursh rsyuh sryuh rysuh yrsuh syruh ysruh usyrh suyrh uysrh yusrh syurh ysurh ruhys urhys rhuys hruys uhrys hurys ruyhs uryhs ryuhs yruhs uyrhs yurhs rhyus hryus ryhus yrhus hyrus yhrus uhyrs huyrs uyhrs yuhrs hyurs yhurs rshyu srhyu rhsyu hrsyu shryu hsryu rsyhu sryhu ryshu yrshu syrhu ysrhu rhysu hrysu ryhsu yrhsu hyrsu yhrsu shyru hsyru syhru yshru hysru yhsru ushyr suhyr uhsyr husyr shuyr hsuyr usyhr suyhr uyshr yushr syuhr ysuhr uhysr huysr uyhsr yuhsr hyusr yhusr shyur hsyur syhur yshur hysur yhsur
Note: these 'words' (valid or invalid) are all the permutations of the word rushy. These words are obtained by scrambling the letters in rushy.