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#include <bits/stdc++.h>
using namespace std;

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

    int t;
    cin >> t;

    while (t--) {
        int n, k;
        cin >> n >> k;

        if (k == 1) {
            if (n > 2) {
                cout << "NIE\n";
            } else {
                string base = "AP";
                cout << base.substr(0, n) << "\n";
            }
        }
        else if (k == 2) {
            if (n > 4) {
                cout << "NIE\n";
            } else {
                string base = "AAPP";
                cout << base.substr(0, n) << "\n";
            }
        }
        else if (k == 3) {
            if (n > 8) {
                cout << "NIE\n";
            } else {
                string base = "AAAPAPPP";
                cout << base.substr(0, n) << "\n";
            }
        }
        else {
            string ans(k, 'A');
            string block = "PAPPAA";

            int need = n - k;
            for (int i = 0; i < need; i++) {
                ans += block[i % 6];
            }

            cout << ans << "\n";
        }
    }

    return 0;
}