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Rattata is called "Korattavar" in the earliest script. This does NOT match the early Pokemon names seen on a pre-release poster, where Rattata has his final name. This suggests the earliest script draft for at least 2-2 was from before they were confident enough in the translation and Pokemon names to start printing promo material.
"Korattavar" is close to "Koratta", Rattata's Jp name.