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

string tab[9][3]={
    {"$","$","$"},
    {"A","$","$"},
    {"AP","AA","$"},
    {"$","AAP","AAA"},
    {"$","AAPP","AAAP"},
    {"$","$","AAAPA"},
    {"$","$","AAAPAP"},
    {"$","$","AAAPAPP"},
    {"$","$","AAAPAPPP"}
};

void solve(){
    int n,k;
    cin>>n>>k;

    if (k<=3){
        if (n>=9){
            cout<<"NIE\n";
            return;
        }

        if (tab[n][k-1]=="$") cout<<"NIE\n";
        else cout<<tab[n][k-1]<<"\n";

        return;
    }

    string pat="PPAPAA";

    string ans;
    for (int i=0;i<k;i++){
        ans+='A';
    }
    n-=k;

    for (int i=0;i<n;i++){
        ans+=pat[i%6];
    }
    cout<<ans<<"\n";
}

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

    int t;
    cin>>t;

    while (t--) solve();

    return 0;
}