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#include <iostream>

using namespace std;


const string cycle = "PAPPAA";

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

    int t;
    cin >> t;

    for (int i = 0; i < t; ++i) {
        int n, k;
        cin >> n >> k;
        if (k >= 4) {
            for (int j = 0; j < k; ++j) {
                cout << "A";
            }
            n -= k;
            while (n > 6) {
                cout << cycle;
                n -= 6;
            }
            for (int j = 0; j < n; ++j) {
                cout << cycle[j];
            }
            cout << endl;
            continue;
        } else if (k == 3) {
            if (n > 8) {
                cout << "NIE" << endl;
            } else if (n == 8) {
                cout << "AAAPAPPP" << endl;
            } else if (n == 7) {
                cout << "AAAPAPP" << endl;
            } else if (n == 6) {
                cout << "AAAPPP" << endl;
            } else if (n == 5) {
                cout << "AAAPP" << endl;
            } else if (n == 4) {
                cout << "AAAP" << endl;
            } else if (n == 3) {
                cout << "AAA" << endl;
            }
        } else if (k == 2) {
            if (n > 4) {
                cout << "NIE" << endl;
            } else if (n == 4) {
                cout << "AAPP" << endl;
            } else if (n == 3) {
                cout << "AAP" << endl;
            } else {
                cout << "AA" << endl;
            }
        } else if (k == 1) {
            if (n > 2) {
                cout << "NIE" << endl;
            } else if (n == 2) {
                cout << "AP" << endl;
            } else {
                cout << "A" << endl;
            }
        }

    }



}