we retreading could be again and so that's 6 so what this says is that ans has turned the string EAB to NSS turned the string BAE into this number 6 and this number six stores these three characters which is kind of cool okay so first of all the this might seem like a weird set of rules to play by but first let's check that this is actually decodable otherwise this would be useless so to see that is it possible to take the the number six and and see which was the last character that was encoded and the answer is yes because