yupps uypps ypups pyups upyps puyps yupps uypps ypups pyups upyps puyps yppus pypus yppus pypus ppyus ppyus uppys pupys uppys pupys ppuys ppuys yupsp uypsp ypusp pyusp upysp puysp yuspp uyspp ysupp syupp usypp suypp ypsup pysup yspup sypup psyup spyup upsyp pusyp uspyp supyp psuyp spuyp yupsp uypsp ypusp pyusp upysp puysp yuspp uyspp ysupp syupp usypp suypp ypsup pysup yspup sypup psyup spyup upsyp pusyp uspyp supyp psuyp spuyp yppsu pypsu yppsu pypsu ppysu ppysu ypspu pyspu ysppu syppu psypu spypu ypspu pyspu ysppu syppu psypu spypu ppsyu ppsyu pspyu sppyu pspyu sppyu uppsy pupsy uppsy pupsy ppusy ppusy upspy puspy usppy suppy psupy spupy upspy puspy usppy suppy psupy spupy ppsuy ppsuy pspuy sppuy pspuy sppuy
Note: these 'words' (valid or invalid) are all the permutations of the word yupps. These words are obtained by scrambling the letters in yupps.