a.cpp

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> pii;
template <typename T1, typename T2>
ostream &operator <<(ostream &os, pair<T1, T2> p){os << p.first << " " << p.second; return os;}
template <typename T>
ostream &operator <<(ostream &os, vector<T> &v){for(T i : v)os << i << ", "; return os;}
template <typename T>
ostream &operator <<(ostream &os, set<T> s){for(T i : s) os << i << ", "; return os;}
template <typename T1, typename T2>
ostream &operator <<(ostream &os, map<T1, T2> m){for(pair<T1, T2> i : m) os << i << endl; return os;}

int main(){
    int t; cin >> t; 
    while(t--){
        string a, b, c; cin >> a >> b >> c;
        bool good = true;
        for(int i = 0; i < (int)a.length(); i++){
            if(a[i] != c[i] && b[i] != c[i]){
                good = false;
                cout << "NO" << endl;
                break;
            }
        }
        if(good){
            cout << "YES" << endl;
        }
    }
    return 0;
}