#include <bits/stdc++.h>
#define int long long
using i64 = unsigned long long;
using namespace std;
int d[4][2] = {{1, 0}, {0, 1}, {0, -1}, {-1, 0}};
string str;
void solve()
{
    int n, k;
    cin >> n >> k;
    string s;
    cin >> s;
    str = s;
    int ans = 0;
    for (int i = 0; i <= min(7ll, k); ++i)
    {
        int now = 0;
        for (int j = 0; j <= n - 7; ++j)
        {
            if (str[j] != 'n')
                continue;
            if (str.substr(j, 7) == "nanjing")
            {
                j += 6;
                now++;
            }
        }
        ans = max(ans, now);
        for (int j = 0; j < n; ++j)
        {
            str[j] = s[(j + 1) % n];
        }
        s = str;
    }
    cout << ans << "\n";
}
signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int t;
    cin >> t;
    while (t--)
        solve();
    return 0;
}