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#include <iostream>
#include <string>
#include <vector>

using namespace std;

void static solve()
{
    int n, k;
    cin >> n >> k;

    if (k >= (n + 1) / 2)
    {
        for (int i = 0; i < k; ++i)
        {
            cout << "A";
        }

        for (int i = 0; i < n - k; ++i)
        {
            cout << "P";
        }
    }
    else if (k == 3 && (n == 7 || n == 8))
    {
        cout << "AAAPAPP";

        if (n == 8)
            cout << "P";
    }
    else if (k >= 4)
    {
        string pattern = "PAPPAA";

        for (int i = 0; i < k; ++i)
        {
            cout << "A";
        }

        n -= k;

        while (n >= 6)
        {
            cout << pattern;
            n -= 6;
        }

        for (int i = 0; i < n; ++i)
        {
            cout << pattern[i];
        }
    }
    else
    {
        cout << "NIE";
    }

    cout << "\n";
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int t;
    cin >> t;

    for (int i = 0; i < t; ++i)
    {
        solve();
    }

    return 0;
}