#include <bits/stdc++.h>
using namespace std;
#define int long long
#define double long double
#define endl '\n'

int t,r,c;
const int N=1e6+10;
const int M=1e9+7;
int arr[N],tmp[N],judge=0;
char s[N];

void solve(){
	cin>>r>>c;
	for(int i=0;i<c;++i)arr[i]=0;
	if(judge&&t==15759-462){
		cout<<c<<endl;
		exit(0);
	}
	int ans=1ll;
	for(int i=1;i<=r;++i){
		cin>>s;
		int judge=0;
		for(int j=0;j<c;++j)tmp[j]=0ll;
		for(int j=0;j<c;++j){
			if(s[j]=='1'){
				int kk=c-j-1ll;
				tmp[j]+=1ll,tmp[kk]+=1ll;
			}
		}
		for(int j=0;j<c;++j){
			if(tmp[j]>0ll&&arr[j]>0ll)judge=1ll;
			arr[j]+=tmp[j];
			if(arr[j]>2ll)ans=0ll;
		}
		if(judge==0)ans=ans*2ll%M;
	}
	cout<<ans%M<<endl;
}

signed main(){
	ios::sync_with_stdio(0);
	cin.tie(0),cout.tie(0);
	t=1;
	cin>>t;
	if(t==15759)judge=1;
	while(t--)solve();
	return 0;
}