#include <bits/stdc++.h>
using namespace std;
template <class c>
struct rge {
  c b, e;
};
template <class c>
rge<c> range(c i, c j) {
  return rge<c>{i, j};
}
template <class c>
auto dud(c* x) -> decltype(cerr << *x, 0);
template <class c>
char dud(...);
struct debug {
  template <class c>
  debug& operator<<(const c&) {
    return *this;
  }
};
const long long int N = 1e2 + 5;
const long long int INF = 1e18;
long long int mod = 1e9 + 7;
long long int dx[4] = {0, 0, +1, -1};
long long int dy[4] = {+1, -1, 0, 0};
long long int po(long long int a, long long int b) {
  a %= mod;
  long long int res = 1;
  while (b > 0) {
    if (b & 1) res = res * a % mod;
    a = a * a % mod;
    b >>= 1;
  }
  return res;
}
void solve() {
  string a, b, c;
  cin >> a >> b >> c;
  long long int len = (long long int)a.size();
  for (long long int i = 0; i < len; i++) {
    if (a[i] != b[i]) {
      if (a[i] != c[i] && b[i] != c[i]) {
        cout << "NO\n";
        return;
      }
    }
    if (a[i] == b[i]) {
      if (c[i] != a[i]) {
        cout << "NO\n";
        return;
      }
    }
  }
  cout << "YES\n";
}
int32_t main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  ;
  long long int t = 1;
  cin >> t;
  while (t--) solve();
  return 0;
}
