#include<bits/stdc++.h>
using namespace std;
int T;
int sum[2][505][505],ans[2][505][505];
char a[505][505],b[505][505];
int main() {
	cin >> T;
	ios::sync_with_stdio(false);
	cin.tie(NULL),cout.tie(NULL);
	while(T--){
		memset(sum,0,sizeof sum);
		memset(ans,0,sizeof ans);
		int n,m;
		cin>>n>>m;
		for(int i=1;i<=n;i++){
			for(int j=1;j<=m;j++){
				cin>>a[i][j];
				a[i][j]=a[i][j]-'1'+1;
				sum[1][i][j]=sum[1][i][j-1]+a[i][j];
				sum[2][i][j]=sum[2][i-1][j]+a[i][j];
			}
		}
		for(int i=1;i<=n;i++){
			for(int j=1;j<=m;j++){
				cin>>b[i][j];
				b[i][j]=b[i][j]-'1'+1;
				ans[1][i][j]=ans[1][i][j-1]+b[i][j];
				ans[2][i][j]=ans[2][i-1][j]+b[i][j];
			}
		}
		bool flag=true;
		for(int i=1;i<=n;i++){
			if(sum[1][i][m]%3!=ans[1][i][m]%3){
				flag=false;
				break;
			}
		}
		for(int i=1;i<=m;i++){
			if(sum[2][n][i]%3!=ans[2][n][i]%3){
				flag=false;
				break;
			}
		}
		if(flag==true){
			cout<<"YES"<<"\n";
		} else {
			cout<<"NO"<<"\n";
		}
		flag=true;
	}
	return 0;
}