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#include <bits/stdc++.h>
#include <iomanip>
 
using namespace std;
using ll = long long ;
using pii = pair <int,int> ;
using pll = pair<ll,ll> ;
using vi = vector <int> ; 
using vll = vector < ll > ;
using tiii = tuple<int,int,int> ; 
using ld = long double ; 
using vpll = vector < pll > ;

#define cYes {cout<<"YES\n";return;}
#define cNo {cout<<"NO\n";return;}
#define bra(x) "[" << (x) << "] "
#define ndl '\n' ;
#define all(x) (x).begin() , (x).end() 
#define sz(x) (int)(x).size() 
#define nd second 
#define st first
#define vvi vector<vector<int>> 

//#define DEBUG
#ifdef DEBUG 
#define dbg(x) cerr << #x << " = " << x << endl 
#else
#define DEBUG 
#endif

const int INFI = 1e9 + 77 ;

int N ;
const int maxn = 1'000'007 ;

vector < vector < string > > answer(20,vector<string>(20));
void initialize(){
     // DLA N = 1 :

    answer[1] [1]  = "A";


    // DLA N = 2 :

    answer[2] [1]  = "AP";
    answer[2] [2]  = "AA";


    // DLA N = 3 :

    answer[3] [1]  = "NIE";
    answer[3] [2]  = "APP";
    answer[3] [3]  = "AAA";


    // DLA N = 4 :

    answer[4] [1]  = "NIE";
    answer[4] [2]  = "AAPP";
    answer[4] [3]  = "APPP";
    answer[4] [4]  = "AAAA";


    // DLA N = 5 :

    answer[5] [1]  = "NIE";
    answer[5] [2]  = "NIE";
    answer[5] [3]  = "PAPPP";
    answer[5] [4]  = "APPPP";
    answer[5] [5]  = "AAAAA";


    // DLA N = 6 :

    answer[6] [1]  = "NIE";
    answer[6] [2]  = "NIE";
    answer[6] [3]  = "APAPPP";
    answer[6] [4]  = "PAPPPP";
    answer[6] [5]  = "APPPPP";
    answer[6] [6]  = "AAAAAA";


    // DLA N = 7 :

    answer[7] [1]  = "NIE";
    answer[7] [2]  = "NIE";
    answer[7] [3]  = "AAPAPPP";
    answer[7] [4]  = "APAPPPP";
    answer[7] [5]  = "PAPPPPP";
    answer[7] [6]  = "APPPPPP";
    answer[7] [7]  = "AAAAAAA";


    // DLA N = 8 :

    answer[8] [1]  = "NIE";
    answer[8] [2]  = "NIE";
    answer[8] [3]  = "AAAPAPPP";
    answer[8] [4]  = "AAPAPPPP";
    answer[8] [5]  = "PPAPPPPP";
    answer[8] [6]  = "PAPPPPPP";
    answer[8] [7]  = "APPPPPPP";
    answer[8] [8]  = "AAAAAAAA";


    // DLA N = 9 :

    answer[9] [1]  = "NIE";
    answer[9] [2]  = "NIE";
    answer[9] [3]  = "NIE";
    answer[9] [4]  = "PAAPAPPPP";
    answer[9] [5]  = "APPAPPPPP";
    answer[9] [6]  = "PPAPPPPPP";
    answer[9] [7]  = "PAPPPPPPP";
    answer[9] [8]  = "APPPPPPPP";
    answer[9] [9]  = "AAAAAAAAA";


    // DLA N = 10 :

    answer[10] [1]  = "NIE";
    answer[10] [2]  = "NIE";
    answer[10] [3]  = "NIE";
    answer[10] [4]  = "PPAAPAPPPP";
    answer[10] [5]  = "AAPPAPPPPP";
    answer[10] [6]  = "APPAPPPPPP";
    answer[10] [7]  = "PPAPPPPPPP";
    answer[10] [8]  = "PAPPPPPPPP";
    answer[10] [9]  = "APPPPPPPPP";
    answer[10] [10]  = "AAAAAAAAAA";
}

void solve(){
    int N , K ; cin >> N >> K ;
    if(N<=10){
        cout << answer[N][K] << ndl ;
        return ;
    }
    // else 
    if( K<=3 ){
        cout << "NIE" << ndl ;
        return ;
    }
    string powt = "PAPPAA" ;
    string ans ;
    for(int i=1;i<=K;i++){
        ans.push_back('A') ;
    }
    int ptr = 0 ;
    for(int i=1;i<=N-K;i++){
        ans.push_back( powt[ptr++] ) ;
        ptr %= 6 ;
    }
    cout << ans << ndl ;
}
int main(){
    ios_base::sync_with_stdio(false) ; cin.tie(0) ;
    
    initialize() ;
    
    int t ; cin >> t ; 
    while(t--){
        solve() ;
    }
    return 0 ;
}