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

string un = "AP";
string dos = "AAPP";
string tres = "AAAPAPPP";

int main() {
	int t;
	cin >> t;
	while (t--) {
		int n, k;
		cin >> n >> k;
		if (k == 1) {
			if (n > 2) cout << "NIE\n";
			else {
				for (int i = 0; i < n; i++) cout << un[i];
				cout << '\n';
			}
		}
		else if (k == 2) {
			if (n > 4) cout << "NIE\n";
			else {
				for (int i = 0; i < n; i++) cout << dos[i];
				cout << '\n';
			}
		}
		else if (k == 3) {
			if (n > 8) cout << "NIE\n";
			else {
				for (int i = 0; i < n; i++) cout << tres[i];
				cout << '\n';
			}
		}
		else {
			string odp = "";
			string quat = "PAPPAA";
			for (int i = 0; i < k; i++) odp += 'A';

			while (odp.size() < n) {
				for (int i = 0; i <= 5 and odp.size() < n; i++) odp += quat[i];
			}
			cout << odp << '\n';
		}
	}
}