#include <iostream>
#include<cstdio>

using namespace std;

char a[105],b[105],c[105],f[26],F[26];
int len1,len2;
int getchr(char *a)
{
	int len=0;
	char c=getchar();
	while(c<'A' || c>'Z')c=getchar();
	while(c>='A' && c<='Z')a[++len]=c,c=getchar();
	return len;
}
int main()
{
	freopen("spy.in", "r", stdin);
	freopen("spy.out", "w", stdout);
	len1=getchr(a),getchr(b),len2=getchr(c);
	for(int i=1; i<=len1; i++)
		{
			if(!f[b[i]-'A'])
				f[b[i]-'A']=a[i];
			if(!F[a[i]-'A'])
				F[a[i]-'A']=b[i];
			if(f[b[i]-'A']!=a[i]||F[a[i]-'A']!=b[i])
				return puts("Failed"),0;
		}
	for(int i=0; i<=25; i++)
		if(!f[i] || !F[i])
			return puts("Failed"),0;
	for(int i=1; i<=len2; i++)
		printf("%c",F[c[i]-'A']);
	return 0;
}