guppy ugppy gpupy pgupy upgpy pugpy guppy ugppy gpupy pgupy upgpy pugpy gppuy pgpuy gppuy pgpuy ppguy ppguy uppgy pupgy uppgy pupgy ppugy ppugy gupyp ugpyp gpuyp pguyp upgyp pugyp guypp ugypp gyupp ygupp uygpp yugpp gpyup pgyup gypup ygpup pygup ypgup upygp puygp uypgp yupgp pyugp ypugp gupyp ugpyp gpuyp pguyp upgyp pugyp guypp ugypp gyupp ygupp uygpp yugpp gpyup pgyup gypup ygpup pygup ypgup upygp puygp uypgp yupgp pyugp ypugp gppyu pgpyu gppyu pgpyu ppgyu ppgyu gpypu pgypu gyppu ygppu pygpu ypgpu gpypu pgypu gyppu ygppu pygpu ypgpu ppygu ppygu pypgu yppgu pypgu yppgu uppyg pupyg uppyg pupyg ppuyg ppuyg upypg puypg uyppg yuppg pyupg ypupg upypg puypg uyppg yuppg pyupg ypupg ppyug ppyug pypug yppug pypug yppug
Note: these 'words' (valid or invalid) are all the permutations of the word guppy. These words are obtained by scrambling the letters in guppy.