Cryptoquote IX
This challenge contains a cryptoquote puzzle.
In this quotation, one letter has been substituted for another. Can you break the code? The text area is for you to work out the solution. Marcus Tullius Cicero said it about a friend in his De Amicitia. Clue: G = L

R SIBUMP BA, RA BO YUIU,
R AUXEMP AUGS.

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