#include <bits/stdc++.h>
 
using namespace std;
 
#define FOR(i, j, k) for(int i = j; i < k; ++i)
#define rep(i, j) FOR(i, 0, j)
#define repr(i, j) for(int i = j; i >= 0; --i)
#define INF (1 << 30)
#define MOD 1e9 + 7
 
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> P;
 
int main() {
    string s;
    bool flag = false;
    int key = 1;
    while(getline(cin, s)){
    	while(s != "the" && s != "that" && s != "this") {
	    	rep(i, s.size()) {
	            if(97 <= s[i] && s[i] <= 122) {
	                int number = (s[i] - 'a' + key) % 26;
	                s[i] = 'a' + number;
	            }
	        }
	    }
	    cout << s << endl;
    }
    return 0;
}