/**
 *    title:  b.cpp
 *    author:  Proaes Meluam
 *    created:  2024-11-22 17:23:23
**/
#include <bits/stdc++.h>
#ifdef LOCAL
#include "algo/debug.h" 
#else
#define debug(...) 42
#endif
using namespace std;
using ll = long long;
using ull = unsigned long long;
const double pi = acos(-1);
const double E = exp(1);
constexpr ll mod = 1e9 + 7;
// constexpr int inf = 0x3f3f3f3f;
constexpr ll inf = 0x3f3f3f3f3f3f3f3f;
int main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    int tt;
    cin>>tt;
    while(tt--){
        int n,bu, ans = 0;
        string s;
        cin>>n>>bu;
        cin>>s;
        for (int be = 0; be <= min(bu, 6); ++ be) {
            int cnt = 0;
            // debug(be);
            for(int i=0;i<n-6;i++){
                if(s[(i+be)%n]=='n'&&s[(i+1+be)%n]=='a'&&s[(i+2+be)%n]=='n'&&s[(i+3+be)%n]=='j'&&s[(i+4+be)%n]=='i'&&s[(i+5+be)%n]=='n'&&s[(i+6+be)%n]=='g'){
                    cnt++;
                }
            }
            ans = max(ans, cnt);
        }
        
        cout<<ans<<"\n";
        
    }
}