#include <iostream>
#include <vector>
#include <set>
#include <map>
#include <algorithm>
#include <math.h>
using namespace std;
char arr[51][51];
int main(){
int n,m;
cin >> n >> m;
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
cin >> arr[i][j];
}
}
int counter = 0;
for(int i = 0; i < n-1; i++){
for(int j = 0; j < m-1; j++){
string s = "";
s+= arr[i][j];
s+= arr[i+1][j];
s+= arr[i][j+1];
s+= arr[i+1][j+1];
sort(s.begin(), s.end());
if(s=="acef") counter++;
}
}
cout << counter << endl;
return 0;
}
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