#include<bits/stdc++.h>
using namespace std;
char s[1005][1005];
const char g[4][4]={
    '0','0','0','0',
    '0','1','1','0',
    '0','1','1','0',
    '0','0','0','0'
};
long long n,m,t,flag=0;
int cheak(long long i,long long j){
	for(long long k=0;k<=3;k++){
		for(long long l=0;l<=3;l++){
			if(s[i+k][j+l]!=g[k][l]){
				return 0;
			} 
		}
	}
	return 1;
}
int main(){
	cin>>t;
	while(t--){
        memset(s,'0',sizeof s);
		cin>>n>>m;
		if(n<4||m<4){
			cout<<"No\n";
			continue;
		}
		for(long long i=1;i<=n;i++){
			for(long long j=1;j<=m;j++){
				cin>>s[i][j];
			}
		}
		for(long long i=1;i<=n;i++){
			for(long long j=1;j<=m;j++){
				if(cheak(i,j)==1){
					flag=1;
					break;
				}
			}
		}
		if(flag==1){
			cout<<"Yes\n";
			flag=0;
		}
		else cout<<"No\n";
	}
	return 0;
}

WA#