#include <bits/stdc++.h>

using namespace std;
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;
    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] = s[i][j - 1] + s[i - 1][j] - s[i - 1][j - 1] + c;
            sp[i][j] = sp[i][j - 1] + sp[i - 1][j] - sp[i - 1][j - 1] + c * c;
        }
    }
    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;
        }
    }
    int cnt = 0;
    for (int i = m; i <= n; i++)
        for (int j = m; j <= n; j++)
            {
                int s1 = s[i][j] - s[i][j - m] - s[i - m][j] + s[i - m][j - m];
                int s2 = sp[i][j] - sp[i][j - m] - sp[i - m][j] + sp[i - m][j - m];
                if (s1 == A && s2 == B)
                    cnt++;
            }
    fout << cnt << "\n";
    return 0;
}