#include <iostream>
#include <string>
using namespace std;
void slide(string& s) {
  for (auto& c: s)
    if (c == 'a') c = 'z';
    else if (c != '.' && c != ' ') c -= 1;
}
bool check(const string& s) {
  if (s.find("the") == string::npos) return true;
  if (s.find("this") == string::npos) return true;
  if (s.find("that") == string::npos) return true;
  return false;
}
int main() {
  string line;
  while(getline(cin, line)) {
    while(check(line))
      slide(line);
    cout << line << endl;
  }
}