#include <bits/stdc++.h>
using namespace std;

/**
3 2
acb
bda
acb
ab   => 1 + 4 + 9 + 16
cd

aa => 1+1+16+16
dd

sume partiale pe ambele matrice
a = 1, b=2, ..., z=26
sume partiale a elementelor la patrat pe ambele matrice

aabc
bbaa
aaba
bbbb

ab
ab

*/

ifstream fin("matrix.in");
ofstream fout("matrix.out");

int s[1002][1002], sp[1002][1002], n, m;
int A, B;

int main()
{
    int i, j, c, cnt = 0, x, y;
    char w[1002];
    fin >> n >> m;
    for (i = 1; i <= n; i++)
    {
        fin >> (w + 1);
        for (j = 1; j <= n; j++)
        {
            c = w[j] - 'a' + 1;
            s[i][j] = c + s[i][j-1] + s[i-1][j] - s[i-1][j-1];
            sp[i][j] = c * c + sp[i][j-1] + sp[i-1][j] - sp[i-1][j-1];
        }
    }
    for (i = 1; i <= m; i++)
    {
        fin >> (w + 1);
        for (j = 1; j <= m; j++)
        {
            c = w[j] - 'a' + 1;
            A = A + c;
            B = B + c * c;
        }
    }

    for (i = m; i <= n; i++)
        for (j = m; j <= n; j++)
        {
            x = s[i][j] - s[i-m][j] - s[i][j-m] + s[i-m][j-m];
            y = sp[i][j] - sp[i-m][j] - sp[i][j-m] + sp[i-m][j-m];
            if (x == A && y == B) cnt++;
        }
    fout << cnt << "\n";
    fout.close();
    fin.close();
    return 0;
}