#include <string>
#include <sstream>
#include <iostream>
#include <algorithm>
using namespace std;

// determine whether it is "the","this" or "that"
char get_shift(string w) {
	char sh = 't' - w.front();
	for_each(w.begin(),w.end(),[sh](char &c) {
		c += sh;
		if (c > 'z') {
			c -= (char)26;
		} else if (c < 'a') {
			c += (char)26;
		}
	});
	if (w.find("the") == string::npos && w.find("this") == string::npos && w.find("that") == string::npos) {
		sh = '\0';
	}
	return sh;
}

int main() {
	string s;
	while (getline(cin,s)) {
		istringstream stream(s);
		string w;
		char sh;
		while (stream >> w) {
			while (!w.empty() && w.front() == '.') {
				w.erase(0,1);
			}
			while (!w.empty() && w.back() == '.') {
				w.pop_back();
			}
			if (!w.empty()) {
				if ((sh = get_shift(w)) != '\0') {
					break;
				}
			}
		}
		for_each(s.begin(),s.end(),[sh](char &c) {
			if (c >= 'a' && c <= 'z') {
				c += sh;
				if (c > 'z') {
					c -= (char)26;
				} else if (c < 'a') {
					c += (char)26;
				}
			}
		});
		cout << s << endl;
	}
}