#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ char a,b,c,d; cin>>a>>b>>c>>d; a=(a-'a'+1)%26+'a'; b=(b-'a'+1)%26+'a'; c=(c-'a'+1)%26+'a'; d=(d-'a'+1)%26+'a'; cout<<a<<b<<c<<d; return 0; }