#include<cstdio>
#include<iostream>
#include<cstring>

using namespace std;

bool pd[27];
char a[105], b[105];
char c[270], dic[105];

int main() {
	freopen("spy.in", "r", stdin);
	freopen("spy.out", "w", stdout);
	scanf("%s%s%s", a, b, c);
	int lena = strlen(a), lenans = strlen(c);
	for (int i = 0; i < lena; i++) {
		if (dic[a[i] - 'A'] && dic[a[i] - 'A'] != b[i]) { puts("Failed"); return 0;}
		dic[a[i] - 'A'] = b[i];
	}
	for (int i = 0; i < 26; i++) if (!dic[i]) { puts("Failed"); return 0;}
	for (int i = 0; i < 26; i++) pd[dic[i] - 'A'] = 1;
	for (int i = 0; i < 26; i++) if (!pd[i]) { puts("Failed"); return 0;}
	for (int i = 0; i < lenans; i++) printf("%c", dic[c[i] - 'A']);
	return 0;
}