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

using ll = long long;
using str = string;

int main() {

    int t;
    cin  >> t;

    for(int x = 0; x < t; x++) {

    int n,k;
    cin >> n >> k;

    vector<char> res = {'A', 'A', 'P', 'A', 'P', 'P'};
    str r = "AAPAPP";

    if(n >= 9) {
        if(k < 4) {
            cout << "NIE";
        }
        else {
            for(int i = 0; i < k-2; i++) {
                cout << 'A';
            }
            for(int i = 0; i < (n - (k-2))/6; i++) {
                cout << r;
            }
            for(int i = 0; i < (n - (k-2))%6; i++) {
                cout << res[i];
            }

        }

        cout << "\n";
    }
    else {
        if (n == 1) {
            if (k == 1) cout << "A\n";
            else cout << "NIE\n";
        }

        else if (n == 2) {
            if (k == 1) cout << "AP\n";
            else if (k == 2) cout << "AA\n";
            else cout << "NIE\n";
        }

        else if (n == 3) {
            if (k == 2) cout << "AAP\n";
            else if (k == 3) cout << "AAA\n";
            else cout << "NIE\n";
        }

        else if (n == 4) {
            if (k == 2) cout << "AAPP\n";
            else if (k == 3) cout << "AAPA\n";
            else if (k == 4) cout << "AAAA\n";
            else cout << "NIE\n";
        }

        else if (n == 5) {
            if (k == 3) cout << "AAPAP\n";
            else if (k == 4) cout << "AAAPA\n";
            else if (k == 5) cout << "AAAAA\n";
            else cout << "NIE\n";
        }

        else if (n == 6) {
            if (k == 3) cout << "APAPPP\n";
            else if (k == 4) cout << "AAAAPP\n";
            else if (k == 5) cout << "AAAAAP\n";
            else if (k == 6) cout << "AAAAAA\n";
            else cout << "NIE\n";
        }

        else if (n == 7) {
            if (k == 3) cout << "AAPAPPP\n";
            else if (k == 4) cout << "AAPAPPA\n";
            else if (k == 5) cout << "AAAAPAA\n";
            else if (k == 6) cout << "AAAAAAP\n";
            else if (k == 7) cout << "AAAAAAA\n";
            else cout << "NIE\n";
        }

        else if (n == 8) {
            if (k == 3) cout << "AAAPAPPP\n";
            else if (k == 4) cout << "AAPAPPAA\n";
            else if (k == 5) cout << "AAAAPAAP\n";
            else if (k == 6) cout << "AAAAAAPP\n";
            else if (k == 7) cout << "AAAAAAAP\n";
            else if (k == 8) cout << "AAAAAAAA\n";
            else cout << "NIE\n";
        }
    }
}
}