#include <iostream>
#include <bits/stdc++.h>

using namespace std;

int main(int argc, char const *argv[])
{
	string str,lock1,lock2;
	while((cin>>lock1)&&lock1=="START"){
	        cin.ignore();//cin与getline连用要用cin.ignore()消除回车字符
            getline(cin,str);
		for (int i = 0; i < str.length(); ++i)
		{
			if ('A'<=str[i]&&str[i]<='Z')
			{
				cout<<(char)((str[i] - 'A' + 21)%26 + 'A');
			}else if(str[i]==','){
			    cout<<',';
			}else{
				cout<<' ';
			}
		}
		cout<<endl;
		if(cin>>lock2&&lock2=="ENDOFINPUT")
		{
			break;
		}
	}
	return 0;
}