#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 x,y,a,b,c,d,e,f; cin>>c>>d>>e>>f; x=(c-97+1)%26+97; y=(d-97+1)%26+97; a=(e-97+1)%26+97; b=(f-97+1)%26+97; cout<<x<<endl<<y<<endl<<a<<endl<<b; return 0; }