#include<bits/stdc++.h>
#define endl '\n' 
using i64 = long long;
using namespace std;
signed main(){
    std::ios::sync_with_stdio(false);
    cin.tie(0);cout.tie(0);
    int T;
    cin >> T;
    while(T--){
        string a, b, c;
        cin >> a >> b >> c;
        if(a.size()!=b.size()){
            cout << "NO" << endl;
            continue;
        }
        if(a.size()!=c.size()){
            cout << "YES" << endl;
            continue;
        }
        int n = a.size();
        bool ok = 1;
        for (int i = 0; i < n;i++)
            if(c[i]!=a[i]&&c[i]!=b[i])
                ok = 0;
        cout << (!ok ? "YES" : "NO") << endl;
    }
    return 0;
}