ios::sync_with_stdio(false);

#include<cstdio>

#include<iostream>

#include<cstring>

using namespace std;

char s1[],s2[],s3[];

int f[],f2[],len1,len2,len3;

int main()

{

    ios::sync_with_stdio(false);

    cin>>s1>>s2>>s3;

    len1=strlen(s1); len2=strlen(s2);

    if (len1<)

    {

        cout<<"Failed";

        return ;

    }

    memset(f,-,sizeof(f));

    memset(f2,-,sizeof(f2));

    for (int i=; i<len1; i++)

    {

        if ((f[s1[i]-'A']!=-||f2[s2[i]-'A']!=-)&&f2[s2[i]-'A']!=s1[i]-'A')

            {

                cout<<"Failed";

                return ;

            }

        if (f[s1[i]-'A']==-)

        {

            f[s1[i]-'A']=s2[i]-'A';

            f2[s2[i]-'A']=s1[i]-'A';

        }

    }

    for (int i=; i<; i++)

    if (f[i]==-)

    {

        cout<<"Failed";

        return ;

    }

    len3=strlen(s3);

    for (int i=; i<len3; i++)

    {

        char c=f[s3[i]-'A']+'A';

        cout<<c;

    }

    return ;

}