#include <cstdio>
#include <cstring>

const int N=1005;

int n,m,sol,k,l,f[27],frecv[27],cnt;
int a[N][N];
char s[N];

void citire()
{
	freopen("matrix.in","r",stdin);
	freopen("matrix.out","w",stdout);
	scanf("%d%d\n",&n,&m);
	for (int i=1;i<=n;++i)
	{
		gets(s);
		for (int j=0;j<n;++j)
			a[i][j+1]=s[j]-'a';
	}
	for(int i=0;i<m;++i)
	{
		gets(s);
		for(int j=0;j<m;++j)
			++frecv[s[j]-'a'];
	}
}
void work()
{
	for(int i=1;i<=n;++i)
		for(int j=1;j<=n;++j)
		{
			memset(f,0,sizeof(f));
			bool ok=false;
			for(int k=i;k<=i+m-1 && !ok;++k)
				for(int l=j;l<=j+m-1 && !ok;++l)
				{
					++f[a[k][l]];
					if(frecv[a[k][l]]!=f[a[k][l]]) 
						ok=true;
				}
			if(!ok) 
				++cnt;
		}						
	printf("%d\n",cnt);
}
int main()
{
	citire();
	work();
	return 0;
	
}