#include <bits/stdc++.h>
using namespace std;

const int N = 15;

vector<int> cards[N];
int ver[N];
map<char, int> s;

void get() { // 对于当前的所有牌做映射
    for(int i = 2; i <= 9; i ++ ) {
        int c = '0' + i;
        s[c] = i;
    }
    s['A'] = 1, s['J'] = 11, s['Q'] = 12, s['K'] = 13, s['0'] = 10;
}

int main() {
    get();
    for(int i = 1; i <= 13; i ++ ) 
        for(int j = 0; j < 4; j ++ ) {
            char c[2];
            cin >> c;
            cards[i].push_back(s[c[0]]);
        }
    //模拟题目的操作置换牌
    for(int i = 0; i < 4; i ++ ) {
        int t = cards[13][i];
        while(t != 13) {
            int r = cards[t].back();
            cards[t].pop_back();
            ver[t] ++ ;
            t = r;
        }
    }
    int ans = 0;
  //如果当前牌是被开出四次，就累加进入答案
    for(int i = 1; i <= 13; i ++ ) ans += (ver[i] >= 4);
    cout << ans << endl;
    return 0;
}