#include <bits/stdc++.h>
using namespace std;
ifstream fcin("matrix.in");
ofstream fcout("matrix.out");

const int N = 1005;
int s[N][N], sp[N][N], suma, sumap;
char v[N][N], x;
int n, m, rasp;

int main()
{
    fcin >> n >> m;
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= n; j++)
            fcin >> v[i][j];
    for (int i = 1; i <= m; i++)
        for (int j = 1; j <= m; j++)
        {
            fcin >> x;
            int aux = x - 'a' + 1;
            suma += aux;
            sumap += aux * aux;
        }
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= n; j++)
        {
            int aux = v[i][j] - 'a' + 1;
            s[i][j] = aux + s[i - 1][j] + s[i][j - 1] - s[i - 1][j - 1];
            sp[i][j] = aux * aux + sp[i - 1][j] + sp[i][j - 1] - sp[i - 1][j - 1];
        }
    for (int i = m; i <= n; i++)
        for (int j = m; j <= n; j++)
        {
            if (s[i][j] - s[i - m][j] - s[i][j - m] + s[i - m][j - m] == suma &&
                sp[i][j] - sp[i - m][j] - sp[i][j - m] + sp[i - m][j - m] == sumap)
                rasp++;
        }
    fcout << rasp;

    return 0;
}