#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int t;
  cin >> t;
  while (t--) {
    string a, b, c;
    cin >> a >> b >> c;
    bool ok = true;
    for (int i = 0; i < a.size(); i++) {
      ok &= a[i] == c[i] || b[i] == c[i];
    }
    cout << (ok ? "YES\n" : "NO\n");
  }
  return 0;
}
