Each letter A–Z and a–z is shifted by 13 positions. Apply again to reverse.

What about non-letters?

Numbers, spaces, and punctuation are left unchanged.

Online ROT13 Text

Apply ROT13 transform to text. Encode and decode are the same: rotate letters by 13.

Input

How does ROT13 work?: Each letter A–Z and a–z is shifted by 13 positions. Apply again to reverse.
What about non-letters?: Numbers, spaces, and punctuation are left unchanged.

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