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#include <iostream>
using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t;
    cin >> t;
    while (t--) {
        int n, k;
        cin >> n >> k;
        if (k == 1) {
            switch (n) {
            case 1:
                cout << "A" << "\n";
                break;
            case 2:
                cout << "AP" << "\n";
                break;
            default:
                cout << "NIE\n";
            }
        }
        if (k == 2) {
            switch (n) {
            case 2:
                cout << "AA" << "\n";
                break;
            case 3:
                cout << "APP" << "\n";
                break;
            case 4:
                cout << "AAPP" << "\n";
                break;
            default:
                cout << "NIE\n";
            }
        }
        if (k == 3) {
            switch (n) {
            case 3:
                cout << "AAA" << "\n";
                break;
            case 4:
                cout << "AAPA" << "\n";
                break;
            case 5:
                cout << "AAAPP" << "\n";
                break;
            case 6:
                cout << "AAAPPP" << "\n";
                break;
            case 7:
                cout << "AAAPAPP" << "\n";
                break;
            case 8:
                cout << "AAAPAPPP" << "\n";
                break;
            default:
                cout << "NIE\n";
            }
        }
        if (k > 3) {
            for (int i = 0; i < k; i++) {
                cout << "A";
            }
            for (int i = 0; i < (n - k) / 6; i++) {
                cout << "PPAPAA";
            }
            switch ((n - k) % 6) {
            case 0:
                break;
            case 1:
                cout << "P";
                break;
            case 2:
                cout << "PP";
                break;
            case 3:
                cout << "PPA";
                break;
            case 4:
                cout << "PPAP";
                break;
            case 5:
                cout << "PPAPA";
                break;
            }
            cout << "\n";
        }
    }
}