#include<iostream>
#include<string>
using namespace std;
int main() {
	string s;
	cin >> s;
	string t = "aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ";
	for (int i = 0; i < s.length(); i++) {
		for (int j = 0; j < 52; j++) {
			if (s[i] == t[j]) {
				if (j % 2 == 0) {
					s[i] = t[j + 1];
				}
				else {
					s[i] = t[j - 1];
				}
				break;
			}
		}
	}
	cout << s << endl;
}