#include<iostream>
#include<string>
#include<cctype>
using namespace std;
 
int main(void)
{
    string str;
    while( getline(cin, str) )
    {
        int i;
        int s = str.size();
        const string::size_type N = string::npos;
        while( str.find("the")==N && str.find("this")==N && str.find("that")==N )
        {
            for(i = 0; i < s; i++)
            {
                if(isalpha(str[i]))
                {
                    str[i] = (str[i]-'a'+1)%26+'a';
                }
            }
        }
        cout << str << endl;
    }
    return 0;
}