#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
map<string,string>a; 
map<string,string>::iterator it;
ll n;
string s,t,aa;
signed main(){
	cin>>n;
	for(int i=1;i<=n;i++)
		cin>>s>>t,a[s]=t;
	cin>>aa;
	string b="";
	for(int i=0;i<aa.size();i++)
	{	
		if(aa[i]<'a'||aa[i]>'z'){
			it=a.find(b);
			if(!b.empty()&&it==a.end())cout<<"UNK";
			else if(!b.empty())cout<<it->second;
			cout<<aa[i];
			b="";
		}
		else b+=aa[i];
	}
	it=a.find(b);
	if(it==a.end())cout<<"UNK";
	else cout<<it->second;
	return 0;
}