#include <iostream>
#include <string>

int main() {
	std::string str;
	std::getline(std::cin, str);
	
	std::string ans;
	for (auto c : str) {
		char elem = c - 4;
		if (c >= 'a' && c <= 'z') {
			if (elem < 'a') {
				elem = 'z' - 'a' + elem + 1;
			}
			ans.push_back(elem);
		} else {
			ans.push_back(c);
		}
	}
	
	std::cout << ans << std::endl;
}