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#include<bits/stdc++.h>

#define int long long

using namespace std;

signed main(){

cin.tie(0) -> sync_with_stdio(0);

int t;
cin>>t;

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

    if(k == 1){
        if(n > 2){
            cout<<"NIE\n";
            continue;
        }
        cout<<"A";
        if(n == 2){
            cout<<"P";
        }
        cout<<'\n';
        continue;
    }
    if(k == 2){
        if(n > 4){
            cout<<"NIE\n";
            continue;
        }
        string s = "AAPP";
        for(int i=0;i<n;i++){
            cout<<s[i];
        }
        cout<<'\n';
        continue;
    }
    if(k == 3){
        if(n > 8){
            cout<<"NIE\n";
            continue;
        }
        string s = "PPPAPAAA";
        for(int i=0;i<n;i++){
            cout<<s[i];
        }
        cout<<'\n';
        continue;
    }
    string s;
    for(int i=0;i<n;i++){
        int d = i % (k+2);
        if(!d || d == k-1 || d == k+1){
            s += 'A';
        }
        else{
            s += 'P';
        }
    }
    cout<<s<<'\n';

}

}