Floyd 秒過
//====================================================================||
// ||
// ||
// Author : GCA ||
// 6AE7EE02212D47DAD26C32C0FE829006 ||
//====================================================================||
#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <climits>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <cctype>
#include <utility>
using namespace std;
#ifdef ONLINE\_JUDGE
#define ll "%lld"
#else
#define ll "%I64d"
#endif
typedef unsigned int uint;
typedef long long int Int;
#define Set(a,s) memset(a,s,sizeof(a))
#define Write(w) freopen(w,"w",stdout)
#define Read(r) freopen(r,"r",stdin)
#define Pln() printf("\\n")
#define I\_de(x,n)for(int i=0;i<n;i++)printf("%d ",x\[i\]);Pln()
#define De(x)printf(#x"%d\\n",x)
#define For(i,x)for(int i=0;i<x;i++)
#define CON(x,y) x##y
#define Pmz(dp,nx,ny)for(int hty=0;hty<ny;hty++){for(int htx=0;htx<nx;htx++){\\
printf("%d ",dp\[htx\]\[hty\]);}Pln();}
#define M 130
#define PII pair<int,int\>
#define PB push\_back
#define oo INT\_MAX
#define Set\_oo 0x3f
#define Is\_debug true
#define debug(...) if(Is\_debug)printf("DEBUG: "),printf(\_\_VA\_ARGS\_\_)
#define FOR(it,c) for(\_\_typeof((c).begin()) it=(c).begin();it!=(c).end();it++)
#define eps 1e-6
bool xdy(double x,double y){return x>y+eps;}
bool xddy(double x,double y){return x>y-eps;}
bool xcy(double x,double y){return x<y-eps;}
bool xcdy(double x,double y){return x<y+eps;}
int min3(int x,int y,int z){
int tmp=min(x,y);
return min(tmp,z);
}
int max3(int x,int y,int z){
int tmp=max(x,y);
return max(tmp,z);
}
int n;
int mz\[M\]\[M\];
int m;
int mz2\[M\]\[M\];
void solve(){
for(int k=0;k<M;k++){
for(int i=0;i<M;i++){
for(int j=0;j<M;j++){
if(mz\[i\]\[k\]&&mz\[k\]\[j\]){
mz\[i\]\[j\]=1;
}
if(mz2\[i\]\[k\]&&mz2\[k\]\[j\]){
mz2\[i\]\[j\]=1;
}
}
}
}
bool y=true;
for(int i=0;i<M;i++){
for(int j=0;j<M;j++){
// debug("%c %c %d %d\\n",i+'A',j+'A',mz\[i\]\[j\],mz2\[i\]\[j\]);
if(mz\[i\]\[j\]!=mz2\[i\]\[j\]){
y=false;break;
}
}
if(!y)break;
}
if(y){
printf("YES\\n");
}else printf("NO\\n");
}
int main() {
ios\_base::sync\_with\_stdio(0);
int test;
// printf("%d %d\\n",'A','z');
scanf("%d",&test);
while(test--){
Set(mz,0);
Set(mz2,0);
scanf("%d%\*c",&n);
for(int i=0;i<n;i++){
char a,b;
scanf("%c %c%\*c",&a,&b);
a=toupper(a);
b=toupper(b);
mz\[a-'A'\]\[b-'A'\]=1;
// mz\[b-'A'\]\[a-'A'\]=1;
}
scanf("%d%\*c",&m);
for(int i=0;i<m;i++){
char a,b;
scanf("%c %c%\*c",&a,&b);
a=toupper(a);
b=toupper(b);
mz2\[a-'A'\]\[b-'A'\]=1;
// mz2\[b-'A'\]\[a-'A'\]=1;
}
solve();
if(test)Pln();
}
}