#include <bits/stdc++.h>
using namespace std;
int main() {
// your code goes here
int t;
cin >> t;
while(t--) {
int n,i;
string a,b,c;
cin >> a >> b >> c;
n = a.size();
int f = 0;
for (int i=0;i<n;i++) {
if (a[i] == c[i]) {
b[i] = c[i];
}
else if (b[i] == c[i]) {
a[i] = c[i];
}
else {
f = 1;
break;
}
}
if (f) {
printf("NO\n");
}
else {
printf("YES\n");
}
}
return 0;
}
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