#include<iostream>
#include<cstring>
using namespace std;
string a,b,w,ans;
char h[26],g[26];
int main(){
	cin>>a>>b>>w;
	int lena=a.length(),lenw=w.length();
	for(int i=0;i<26;i++){
		h[i]='*';
		g[i]='*';
	}
	for(int i=0;i<lena;i++){
		if(h[a[i]-'A']=='*')
			h[a[i]-'A']=b[i];
		if(('A'<=h[a[i]-'A']&&'Z'>=h[a[i]-'A'])&&(h[a[i]-'A']!=b[i])){
			cout<<"Failed"<<endl;
			return 0;
		}
		if(g[b[i]-'A']=='*')
			g[b[i]-'A']=a[i];
		if(('A'<=g[b[i]-'A']&&'Z'>=g[b[i]-'A'])&&(g[b[i]-'A']!=a[i])){
			cout<<"Failed"<<endl;
			return 0;
		}
	}
	for(int i=0;i<26;i++){
		if(h[i]=='*'){
			cout<<"Failed"<<endl;
			return 0;
		}
	}
	for(int i=0;i<lenw;i++)
		cout<<h[w[i]-'A'];
	return 0;
}