#include <bits/stdc++.h>
using namespace std;
map<string, string> dict;
int main() {
  int N;
  cin >> N;
  while (N--) {
    string word1, word2;
    cin >> word1 >> word2;
    dict[word1] = word2;
  }
  string content, word = "";
  cin >> content;
  content += "\n";

  for (int i = 0; i < content.size(); i++) {
    if (content[i] >= 'a' && content[i] <= 'z')
      word += content[i];
    else { // 遇到符号，就停止下来看看刚才是不是拼接出了新的单词
      if (word != "") {
        if (dict.count(word))
          cout << dict[word];
        else
          cout << "UNK";
        word = "";
      }
      // 输出符号
      cout << content[i];
    }
  }
  return 0;
}