#include<bits/stdc++.h> using namespace std; int main() { char a,b,c,z; cin>>a>>b>>c>>z; a=(a-97+1)%26+97; b=(b-97+1)%26+97; c=(c-97+1)%26+97; z=(z-97+1)%26+97; cout<<a<<''<<b<<''<<c<<''<<d<<''; return 0; }