upply puply upply puply ppuly ppuly uplpy pulpy ulppy luppy plupy lpupy uplpy pulpy ulppy luppy plupy lpupy ppluy ppluy plpuy lppuy plpuy lppuy uppyl pupyl uppyl pupyl ppuyl ppuyl upypl puypl uyppl yuppl pyupl ypupl upypl puypl uyppl yuppl pyupl ypupl ppyul ppyul pypul yppul pypul yppul uplyp pulyp ulpyp lupyp pluyp lpuyp upylp puylp uyplp yuplp pyulp ypulp ulypp luypp uylpp yulpp lyupp ylupp plyup lpyup pylup yplup lypup ylpup uplyp pulyp ulpyp lupyp pluyp lpuyp upylp puylp uyplp yuplp pyulp ypulp ulypp luypp uylpp yulpp lyupp ylupp plyup lpyup pylup yplup lypup ylpup pplyu pplyu plpyu lppyu plpyu lppyu ppylu ppylu pyplu ypplu pyplu ypplu plypu lpypu pylpu yplpu lyppu ylppu plypu lpypu pylpu yplpu lyppu ylppu
Note: these 'words' (valid or invalid) are all the permutations of the word upply. These words are obtained by scrambling the letters in upply.