#include<iostream>
#include<string>
#include<cstdio>
using namespace std;
struct wz
{
	char ming;
	char mi;
}we[27];   
int main()
{
	freopen("spy.in","r",stdin);
	freopen("spy.out","w",stdout);
	string a,b,c;
	int la;
	cin>>a>>b;
	la=a.size();
	for(int i=1;i<=26;i++)
	{
		we[i].mi='a';
		we[i].ming='a';
	}
	for(int i=0;i<la;i++)
	{
		we[a[i]-64].mi=a[i];
	}
	bool pd=0;
	for(int i=0;i<la;i++)
	{
		if(we[a[i]-'A'+1].ming=='a')
		{
			we[a[i]-'A'+1].ming=b[i];
			for(int ttt=1;ttt<=26;ttt++)
				{
					if(we[ttt].ming==b[i]&&ttt!=a[i]-'A'+1)
					{
						pd=1;
						break;
					}
				}
			
		}
		else
		{
			if(we[a[i]-'A'+1].ming==b[i])
			{
			}
			else
			{
				pd=1;
				break;
			}
		}
	}
	if(pd==0)
	{
		for(int i=1;i<=26;i++)
		{	
			if(we[i].ming=='a'||we[i].mi=='a')
			{
				pd=1;
				break;
			}
		}
	}
	cin>>c;
	if(pd==0)
	{
        
		int lc=c.size();
		for(int i=0;i<lc;i++)
		{
			cout<<we[c[i]-'A'+1].ming;
		}
	}
	else
	{
		cout<<"Failed";
	}
	return 0;
}