#include "bits/stdc++.h"
#define int long long
#define ull unsigned long long
#define PII pair<int, int>
#define TIII tuple<int, int, int>
#define LL __int128
#define eps 1e-6
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
constexpr int N = 2e6 + 10, M = 2e6 + 10, mod = 1e9 + 7, inf = 1e18;
int n, m;

void solve()
{
    int k;
    cin >> n >> k;
    string s;
    cin >> s;
    int ans = 0;
    if (k > 7)
    {
        s += s;
        for (int i = 0; i < s.size() / 2; i++)
        {
            if (s.substr(i, 7) == "nanjing")
                ans++;
        }
        cout << ans << endl;
    }
    else
    {
        s += s.substr(0, k);
        for (int i = 0; i < s.size(); i++)
        {
            if (s.substr(i, 7) == "nanjing")
                ans++;
        }
        cout << ans << endl;
    }
}

signed main()
{
    std::ios::sync_with_stdio(false);
    cin.tie(nullptr), cout.tie(nullptr);
    cout << fixed << setprecision(2);

#ifndef ONLINE_JUDGE
    freopen("in.txt", "rt", stdin);
    freopen("out.txt", "wt", stdout);
#endif

    int Cases = 1;
    cin >> Cases;
    while (Cases--)
    {
        solve();
    }
    return 0;
}