#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
char a[200],b[200],c[200],x[200];
int main()
{
	freopen("spy.in","r",stdin);
	freopen("spy.out","w",stdout);
	scanf("%s%s%s",a,b,c);
	int l=strlen(a);
	for(int i=0;i<l;i++)
	{
		if(x[a[i]]&&x[a[i]]!=b[i])
		{cout<<"Failed"<<endl;return 0;}
		x[a[i]]=b[i];
	}
	for(int i='A';i<='Z';i++)
     for(int j='A';j<='Z';j++)
      if(x[i]==x[j]&&i!=j)
       {cout<<"Failed"<<endl;return 0;}
	for(int i='A';i<='Z';i++)
	{
		if(!x[i])
		{cout<<"Failed"<<endl;return 0;}
	}
	for(int i=0;i<=strlen(c);i++)
	cout<<x[c[i]];
	cout<<endl;
	return 0;
}