#include<iostream>
#include<cstdio>
#include<string>
#include<cstring>
#include<algorithm>
using namespace std;
string x,y,z;
int c[27],s=0;
bool f[27],t[27];
int len1,len2;
int main()
{
	freopen("spy.in","r",stdin);
    freopen("spy.out","w",stdout);
    memset(c,0,sizeof(c));
    memset(f,false,sizeof(f));
    memset(t,false,sizeof(t));
    cin>>x>>y>>z;
    len1=x.size();
    len2=z.size();
    for(int i=0;i<len1;i++)
    {
        if(!f[x[i]-'A'+1]&&!t[y[i]-'A'+1])
        {
            c[x[i]-'A'+1]=y[i];
            f[x[i]-'A'+1]=t[y[i]-'A'+1]=true;
            ++s;
        }    
        else if(c[x[i]-'A'+1]!=y[i])
        {
            cout<<"Failed";
            return 0;    
        }
    }
    if(s!=26)
    {
        cout<<"Failed";
            return 0;    
    }
    for(int i=0;i<len2;i++)
    {
        printf("%c",c[z[i]-'A'+1]);    
    }
}