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/******************************************************************************

                              Online C++ Compiler.
               Code, Compile, Run and Debug C++ program online.
Write your code in this editor and press "Run" button to compile and execute it.

*******************************************************************************/

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

int main()
{
    int t;cin>>t;
    string k3 = "PPPAPAAA";
    string cykl = "APAAPP";
    for(int i=0;i<t;i++){
        int n,k;cin>>n>>k;
        string s="";
        if(k==1){
            if(n==1){
                cout<<"A"<<endl;
            }
            else if(n==2){
                cout<<"AP"<<endl;
            }
            else{
                cout<<"NIE"<<endl;     
            }
            continue;
        }
        else if(k>n){
            cout<<"NIE"<<endl;
            continue;
        }
        else if(k==2){
            if(n==2){
                cout<<"PP"<<endl;
            }
            else if(n==3){
                cout<<"PPA"<<endl;
            }
            else if(n==4){
                cout<<"PPAA"<<endl;
            }
            else{
                cout<<"NIE"<<endl;
            }
            continue;
        }
        else if(k==3){
            if(n>8){
                cout<<"NIE"<<endl;
            }
            else{
                for(int i=0;i<n;i++){
                    s+= k3[i];
                }
            }
            cout<<s<<endl;
            continue;
        }
        else{
            for(int i=0;i<k;i++){
                s+='P';
            }
            int pz=n-k;
            int c=0;
            for(int i=0;i<pz;i++){
                s+=cykl[c];
                c = (c+1)%cykl.size();
                
            }
        }
    
        cout<<s<<endl;
        
    }
}