#include<bits/stdc++.h>
using namespace std;
int main(){
	string a,b,c;
	cin>>a>>b>>c;
	char y[2][26];
	int p=0;
	while(p!=26){
		y[0][p]=48;
		y[1][p]=48;
		p++;
	}
	p=0;
	while(p!=a.size()){
		if(y[1][a[p]-65]==48 or y[0][a[p]-65]==b[p]){
		y[0][a[p]-65]=b[p];
		y[1][a[p]-65]+=1;	
		}
		else{
			cout<<"Failed";
			return 0;
		}
		p++;
	}
	p=0;
	while(p!=26){
		if(y[0][p]==48){
			cout<<"Failed";
			return 0;
		}
		p++;
	}
	p=0;
	while(p!=c.size()){
		cout<<y[0][c[p]-65];
		p++;
	}
	return 0;
}