# include <bits/stdc++.h>

using namespace std;
int main(){
	string b;
	int len;
	cin>>b;
	len=b.length();
		for(int i=0;i<len;i++){
			if(b[i]==' '){
				continue;
			}
			if(b[i]=='z'){
				b[i]=98;
				continue;
			}
			if(b[i]=='y'){
				b[i]=97;
				continue;
			}
			b[i]=b[i]+2;
		}
	cout<<b;
	return 0;
}