#include <fstream>
using namespace std;
int s[1002][1002], sp[1002][1002],n,m;
int A,B;
int main()
{
    ifstream cin("matrix.in");
    ofstream cout("matrix.out");
    int i,j,c,cnt=0,x,y;
    char w[1002];
    cin>>n>>m;
    for(i=1;i<=n;i++)
    {
        cin>>(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++)
    {
        cin>>(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++;
        }
    cout<<cnt<<"\n";
    return 0;
}