#include <stdio.h>

int main()
{
	int n, m, c = 0, d = 0; char b[111][111];
	scanf ("%d %d", &n, &m);
	for (int i = 0; i < n; i++){
		scanf ("%s", b[i]);
		for (int j = 0; j < m; j++) if (b[i][j] != '?'){
			c += (b[i][j] - '0' + i + j) % 2;
			d++;
		}
	}

	int u = 0;
	for (int i = 0; i < n; i++){
		int c[2] = { 0, };
		for (int j = 0; j < m; j++) if (b[i][j] != '?'){
			c[(b[i][j] - '0' + j) % 2]++;
		}
		if (c[0] && c[1]){
			u = -1; break;
		}
		if (!c[0] && !c[1]) u++;
	}

	int v = 0;
	for (int j = 0; j < m; j++){
		int c[2] = { 0, };
		for (int i = 0; i < n; i++) if (b[i][j] != '?'){
			c[(b[i][j] - '0' + i) % 2]++;
		}
		if (c[0] && c[1]){
			v = -1; break;
		}
		if (!c[0] && !c[1]) v++;
	}

	const long long mod = 1000000007;
	long long U = 1, V = 1;
	if (u < 0) U = 0;
	else while (u--) U = U * 2 % mod;
	if (v < 0) V = 0;
	else while (v--) V = V * 2 % mod;

	long long A = (U + V) % mod;
	if (c == 0) A = (A + mod - 1) % mod;
	if (c == d) A = (A + mod - 1) % mod;
	
	printf ("%lld\n", A);

	return 0;
}