#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
#define endl '\n'
#define MAXN 200005
void solve()
{
	string s1, s2, s3;
	cin >> s1 >> s2 >> s3;
	
	if (s1.size() != s2.size()) {
		cout << "NO" << endl;
		return;
	}
	
	if (s1.size() != s3.size()) {
		cout << "YES" << endl;
		return;
	}
	
	
	map<pair<char, char>, bool> mp;
	for (int i = 0; i < s1.size(); i++) {
		mp[{s1[i], s2[i]}] = 1;
		mp[{s2[i], s1[i]}] = 1;
	}
	for (int i = 0; i < s1.size(); i++) {
		if (s3[i] != s1[i] && s3[i] != s2[i] && !mp[{s2[i], s3[i]}] && !mp[{s3[i], s2[i]}]) {
			cout << "YES" << endl;
			return;
		}
	}
	
	cout << "NO" << endl;
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	
	int t = 1;
	cin >> t;
	
	while (t--) {
		solve();
	}
	
	return 0;
}
/*
4
abab
cdcd
abce
abab
cdcd
abcd
abab
cdcd
abc
x
yz
def
 */