#include <bits/stdc++.h>

using namespace std;

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

int s[1005][1005], sp[1005][1005], n, m;
int A, B;

int main()
{

    int i, j, c, x, y, cnt = 0;
    char w[1005];
    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 += c;
            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;
}