#include<bits/stdc++.h>
#define int long long
#define mod 998244353ll
#define pii pair<int,int>
#define fi first
#define se second
#define mems(x,y) memset(x,y,sizeof(x))
#define pb push_back
#define db double
using namespace std;
const int maxn=200010;
const int inf=1e18;
inline int read(){
	int x=0,f=1;
	char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){x=(x<<3)+(x<<1)+(ch-48);ch=getchar();}
	return x*f;
}
bool Mbe;

int n;
char s1[maxn],s2[maxn],s3[maxn];
int f[maxn];
int fd(int x){
	if(f[x]==x)return x;
	return f[x]=fd(f[x]);
}
void work(){
	scanf("%s%s%s",s1,s2,s3);n=strlen(s1);
	if(n!=strlen(s2)){puts("NO");return ;}
	if(n!=strlen(s3)){puts("YES");return ;}
	for(int i=0;i<26;i++)f[i]=i;
	for(int i=0;i<n;i++)f[fd(s1[i]-'a')]=fd(s2[i]-'a');
	for(int i=0;i<n;i++)if(fd(s1[i]-'a')!=fd(s3[i]-'a')){puts("YES");return ;}
	puts("NO");
}

// \
444

bool Med;
int T;
signed main(){
//	freopen(".in","r",stdin);
//	freopen(".out","w",stdout);
	
//	ios::sync_with_stdio(0);
//	cin.tie(0);cout.tie(0);
	
//	cerr<<(&Mbe-&Med)/1048576.0<<" MB\n";
	
	T=read();
	while(T--)work();
}