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#include <bits/stdc++.h>

using namespace std;
using ll = long long;

void test(){
    ll n, k, i;
    cin >> n >> k;
    
    if (k == 1){
        if (n > 2){
            cout << "NIE\n";
            
            return;
        }
        
        string s="AP";
        for (i=0; i<n; ++i)
            cout << s[i];
        cout << '\n';
        
        return;
    }
    if (k == 2){
        if (n > 4){
            cout << "NIE\n";
            
            return;
        }
        
        string s="AAPP";
        for (i=0; i<n; ++i)
            cout << s[i];
        cout << '\n';
        
        return;
    }
    if (k == 3){
        if (n > 8){
            cout << "NIE\n";
            
            return;
        }
        
        string s="AAAPAPPP";
        for (i=0; i<n; ++i)
            cout << s[i];
        cout << '\n';
        
        return;
    }
    
    string s="PAPPAA";
    for (i=0; i<k; ++i)
        cout << 'A';
    for (i=0; i<n-k; ++i)
        cout << s[i%6];
    cout << '\n';
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    ll t, i;
    cin >> t;
    
    for (i=0; i<t; ++i)
        test();

    return 0;
}