#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int INF = 1e9 + 10;
const ll INFL = 4e18;

int main() {
    vector<string> info = {"akai", "marui", "okii", "umai"};
    sort(info.begin(), info.end());

    int N;
    cin >> N;
    int ans = 0;

    for (int i = 0; i < N; i++) {
        vector<string> S(4);
        for (int j = 0; j < 4; j++) {
            cin >> S[j];
        }
        sort(S.begin(), S.end());

        if (S == info) {
            ans++;
        }
    }

    cout << ans << endl;
}