// yukicoder: No.226 0-1パズル
// 2019.8.5 bal4u

#include <stdio.h>

typedef long long ll;

#if 1
#define gc() getchar_unlocked()
#else
#define gc() getchar()
#endif

int in() {   // 非負整数の入力
	int n = 0, c = gc();
	do n = 10 * n + (c & 0xf); while ((c = gc()) >= '0');
	return n;
}

#define MOD 1000000007

int H, W;
char rr[105][2], cc[105][2];

int main()
{
	int r, c, ar, ac;
	
	H = in(), W = in();
	for (r = 0; r < H; r++) {
		for (c = 0; c < W; c++) {
			int s = gc();
			if      (s == '0') rr[r][c & 1] |= 1, cc[c][r & 1] |= 1;
			else if (s == '1') rr[r][c & 1] |= 2, cc[c][r & 1] |= 2;
		}
		gc();
	}

	ac = ar = 1;
	for (c = 0; c < W; c++) {
		if (cc[c][0] == 0 && cc[c][1] == 0) ac = ((ll)ac << 1) % MOD;
		else if (cc[c][0] == 3 || cc[c][1] == 3) { ac = 0; break; }
		else if ((cc[c][0] ^ cc[c][1]) == 0) { ac = 0; break; } 
	}
	for (r = 0; r < H; r++) {
		if (rr[r][0] == 0 && rr[r][1] == 0) ar = ((ll)ar << 1) % MOD;
		else if (rr[r][0] == 3 || rr[r][1] == 3) { ar = 0; break; }
		else if ((rr[r][0] ^ rr[r][1]) == 0) { ar = 0; break; }
	}
	if (ar && ac) {
		int i, k = (H >= W)? H: W, fe, fo, f;
		fe = fo = f = 0;
		for (i = 0; i < k; i++) {
			if (rr[i][0] || rr[i][1] || cc[i][0] || cc[i][1]) f = 1;
			if (i & 1) fo |= rr[i][0] | cc[i][0];
			else       fe |= rr[i][1] | cc[i][1];
		}
		if (fo == 0 && fe == 0) { if (f) ar--; }
		else if (fo == 1) ar--;
		else if (fe == 2) ar--;
	}
	ar = (ar + ac) % MOD;
	if (ar < 0) ar += MOD;
	printf("%d\n", ar);
	return 0;
}