#include<iostream>
#include<vector>
using namespace std;

int main() {
	string s1, s2, s3,a;
	cin >> s1 >> s2 >> s3;
	for (int i = 0; i < 3; i++) {
		if (s1[i] == s3[i] and s1[i] != s2[i]) a = "Yes";
		else  a="No";
	}
	cout << a<< endl;
	return 0;
}