How do I check if the last pressed key is in the alphabet?

I’m making Wordle in GDevelop, and I want to check if the last pressed key is in the alphabet because if you press something like the spacebar or the number keys it does this (the picture)

I don’t want to manually add each key in the alphabet or each key that’s not in the alphabet.
Screenshot 2022-03-02 132027

Check the Input Validation extension.

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