#include <functional>
#include <algorithm>
#include <iostream>
#include <numeric>
#include <iomanip>
#include <utility>
#include <cstdlib>
#include <sstream>
#include <bitset>
#include <vector>
#include <cstdio>
#include <ctime>
#include <queue>
#include <deque>
#include <cmath>
#include <stack>
#include <list>
#include <map>
#include <set>

using namespace std;

typedef vector<int> vi;
typedef pair<int,int> pii;
typedef long long ll;

#define dump(x)  cerr << #x << " = " << (x) << endl
#define rep(i,n) for(int i=0;i<(n);i++)
#define all(a)  (a).begin(),(a).end()
#define pb push_back


int main() {
    string s;
    getline(cin,s);

    while(1){
        if( s.find("this")!=string::npos || s.find("that")!=string::npos ||s.find("the")!=string::npos )break;
        rep(i,s.size()){
            if(s[i]<='z' && s[i]>='a'){
                if(s[i]=='a')s[i]='z';
                else{
                    s[i]--;
                }
            }
        }
    }
    cout<<s<<endl;
    
    
    return 0;
}