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#include <bits/stdc++.h>
using namespace std;
int main()
{
    string ans[] = {
        "",
        "PA",
        "PPAA",
        "PPPAPAAA"
    };

    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t; cin >> t;
    while (t--) {
        int n, k; cin >> n >> k;
        string res = "";
        if (k <= 3) {
            if (ans[k].length() < n) {
                cout << "NIE\n";
                continue;
            }
            res = ans[k];
        }
        else {
            res = string(k, 'P');
            while (res.length() < n) res += "AAPAPP";
        }
        cout << res.substr(0, n) << "\n";
    }
}