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#include <iostream>
#include <vector>
using namespace std;
int main()
{
    int n, k;
    cin >> n >> k;
    int m=0;
    vector <int> ile1;
    int t[n+2][n+2];
    int i, j;
    char a;
    int l;
    for (i=0; i<n+2; i++)
    {
        t[0][i]=-2000;
        t[n+1][i]=-2000;
        t[i][0]=-2000;
        t[i][n+1]=-2000;
    }
    for (i=1; i<n+1; i++)
    {
        for (j=1; j<n+1; j++)
        {
            cin >> a;
            if (a=='.')
            {
                t[i][j]=-1;
            }
            else
            {
                t[i][j]=0;
            }
        }
    }
    for (i=1; i<n+1; i++)
    {
        for (j=1; j<n+1; j++)
        {
            if (t[i][j]==-1)
            {
                if (t[i-1][j]==0 || t[i+1][j]==0 || t[i][j-1]==0 || t[i][j+1]==0)
                {
                    t[i][j]=1;
                    m++;
                }
            }
        }
    }
    for (i=1; i<n+1; i++)
    {
        for (j=1; j<n+1; j++)
        {
            if (t[i][j]==1)
            {
                ile1.push_back(0);
                if (t[i-1][j]==-1)
                    {
                        ile1[ile1.size()-1]++;
                    }
                    if (t[i+1][j]==-1)
                    {
                        ile1[ile1.size()-1]++;
                    }
                    if (t[i][j-1]==-1)
                    {
                        ile1[ile1.size()-1]++;
                    }
                    if (t[i][j+1]==-1)
                    {
                        ile1[ile1.size()-1]++;
                    }
            }
        }
    }
    for (l=0; l<ile1.size(); l++)
    {

    }
    if (k==1)
    {
        cout << m;
    }
    else
    {
        long long wynik=0;
        wynik+=m*(m-1)/2;
        wynik=wynik%1000000007;
        for (i=0; i<ile1.size(); i++)
        {
            wynik+=ile1[i];
        }
        wynik=wynik%1000000007;
        cout << wynik;
    }
}