Eevee234 has said that suggestion already
NAMES THAT HAVE BEEN SAID
Tentacruel
Dratini
Vulpix
Chinchou
Castform
Marill/Azumarill
Surksit
Poliwag/Poliwhirl
Gloom
Horsea
Psyduck
quite a long list, that it is. Two have been repeated already, so becareful what you guess and try to be sure to look at all the guesses before you post yours.(yes i know it is hard and frustration, but trust me, it narrows it down quite alot and it saves time *nods*)