#include <iostream>
#include <algorithm>
#include<math.h>
#include<string>
#include<vector>
#include<ctype.h>
#include<set>
using namespace std;
int main() {
#ifdef LOCAL
	freopen("D:\\datain.txt", "r", stdin);
#endif
	set<char> s;
	string str;
	getline(cin,str);
	for (int i = 0; i < str.length(); i++) {
		s.insert(str[i]);
	}
	string str1;
	cin >> str1;
	for (int i = 0; i < str1.length(); i++) {
		if (s.find(toupper(str1[i])) == s.end()) {
			
			if (isupper(str1[i])&&s.find('+') != s.end()) {
				//printf("%c", tolower(str1[i]));
			}
			else {
				printf("%c", str1[i]);
			}
		}
	}
	cout << endl;
}