#include<iostream>
#include<string>
#include<algorithm>
#include<map>
#include<vector>
#include<cmath>
#include<cstdio>
#define loop(i,a,b) for(int i=a;i<b;i++) 
#define rep(i,a) loop(i,0,a)
#define pb(in,tmp) in.push_back(tmp)
#define all(in) in.begin(),in.end()
const double PI=acos(-1);
using namespace std;
int main(){
  string s;
  while(getline(cin,s)){
    while(s.find("this")==string::npos&&s.find("that")==string::npos&&s.find("the")==string::npos){
      rep(i,s.size()){
	if(s[i]=='z')s[i]='a';
	else if(isalpha(s[i]))s[i]++;
      }
    }
    cout<<s<<endl;


  }


}