#include<iostream>
#include<stdio.h>
#include<string.h>
#include<ctype.h>

int main()
{
	char str[90];
	
	while( fgets( str, 81, stdin ) != 0 ){
		while( 1 ){
			for( int i = 0; i < strlen( str ); i++ ){
				if( isalpha( str[i] ) ) str[i]++;
				
				if( str[i] > 'z' ){
				 	str[i] = 'a';
				}
			}
			
			if( strstr( str, "the" ) != NULL || strstr( str, "this" ) != NULL || strstr( str, "that" ) != NULL ) break;
		}
		
		std::cout << str;
	}

 	return 0;
}