#include <iostream>

using namespace std;

const long MOD = 1000000007;

long pow[101];

void init(){
    pow[0] = 1;
    for(int i = 1; i <= 100; i++){
        pow[i] = pow[i-1]*2;
        pow[i] %= MOD;
    }
}

int main(){
    init();
    int H, W;
    cin >> H >> W;
    char s[100][100];
    bool all_free = true;
    for(int i = 0; i < H; i++){
        for(int j = 0; j < W; j++){
            cin >> s[i][j];
            if(s[i][j] != '?') all_free = false;
        }
    }
    int fc = 0, fr = 0;
    int bc = 0, br = 0;
    for(int i = 0; i < H; i++){
        int type = -1;
        for(int j = 0; j < W; j++){
            if(s[i][j] == '0'){
                if(j%2 == 0){
                    if(type == 1) br++;
                    else type = 0;
                }else{
                    if(type == 0) br++;
                    else type = 1;
                }
            }
            if(s[i][j] == '1'){
                if(j%2 == 0){
                    if(type == 0) br++;
                    else type = 1;
                }else{
                    if(type == 1) br++;
                    else type = 0;
                }
            }
        }
        if(type == -1) fr++;
    }
    long ans = 0;
    if(br == 0) ans += pow[fr];
    
    for(int j = 0; j < W; j++){
        int type = -1;
        for(int i = 0; i < H; i++){
            if(s[i][j] == '0'){
                if(i%2 == 0){
                    if(type == 1) bc++;
                    else type = 0;
                }else{
                    if(type == 0) bc++;
                    else type = 1;
                }
            }
            if(s[i][j] == '1'){
                if(i%2 == 0){
                    if(type == 0) bc++;
                    else type = 1;
                }else{
                    if(type == 1) bc++;
                    else type = 0;
                }
            }
        }
        if(type == -1) fc++;
    }
    if(bc == 0) ans += pow[fc];
    if(bc == 0 && br == 0){
        if(all_free) ans -= 2;
        else ans -= 1;
    }
    ans %= MOD;
    ans += MOD;
    ans %= MOD;
    cout << ans << endl;
}