#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()
{
    cin>>n>>m;
    int k=7;
    string s;
    cin>>s;
    s=s+s;
    s=" "+s;
    int ans=0,res=0;
    int cnt=min({m,k,n})+1;
  //  cout<<cnt<<" ";
    for(int j=1;j<=cnt;j++)
    {
        ans=0;
        for(int i=j;i+6<=(n+j-1);i++)
        {
            if(s.substr(i,7)=="nanjing") ans++;
        }
        res=max(res,ans);
    }
    cout<<res<<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;
}