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#include <bits/stdc++.h>

typedef long long ll;

using namespace std;

int main(){
    cin.tie(0)->sync_with_stdio(0);

    int t;
    cin >> t;
    while(t--){
        int n, k;
        cin >> n >> k;

        if(k == 1){
            string s = "AP";
            if(n <= 2) cout << s.substr(0, n) << '\n';
            else cout << "NIE\n";
        }else if(k == 2){
            string s = "AAPP";
            if(n <= 4) cout << s.substr(0, n) << '\n';
            else cout << "NIE\n";
        }else if(k == 3){
             string s = "AAAPAPPP";
            if(n <= 8) cout << s.substr(0, n) << '\n';
            else cout << "NIE\n";
        }else{
            for(int i = 0; i < k; i++){
                cout<<"A";
            }
            string s = "PAPPAA";
            for(int i = k; i < n; i++){
                cout << s[(i-k)%6];
            }
            cout << '\n';
        }
    }

    return 0;
}