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#include<bits/stdc++.h>
#define VAR(i,n) __typeof(n) i = (n)
#define loop(i,j,s) for(int i=j;i<s;i++)
#define loopback(i,j,s) for(int i=j;i>=s;i--)
#define foreach(i,c) for(VAR(i,(c).begin());i!=(c).end();i++)
#define pln( x ) cout << x << "\n"
#define ps( x ) cout << x << " "
#define entr cout << "\n"
#define pcnt(i) __builtin_popcount(i)
#define ll long long
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define SIZE(c) (c).size()
#define ALL(c) (c).begin(), (c).end()
using namespace std;
typedef vector<int> VI;
typedef pair<int, int> PII;
typedef vector<vector<int> > VVI;
const int INFTY=20000000;
const int MAX=500100;
const int MOD=10000000;

void coutTab(int* tab,int n){
	loop(i,0,n){
		cout<<tab[i]<<" ";
	}
	cout<<"\n";
}

template<class T> void coutVec(vector<T> tab){
	for(T t : tab){
		cout<<t<<" ";
	}
	cout<<"\n";
}
//------------------------------------------

string sol="PPAPAA"; // PPAPAAPPAPAAPPAPAA
string sol3="AAAPAPPP";

string solve(int n, int k){
	if(n==1 && k == 1) return "A";
	if(n==2 && k == 1) return "AP";
	if(n==2 && k == 2) return "AA";
	if(n==3 && k == 2) return "APP";
	if(n==3 && k == 3) return "APA";
	if(n==4 && k == 2) return "AAPP";
	if(k == 1) return "NIE";
	if(k == 2) return "NIE";
	if(k == 3) {
		if(n>8) return "NIE";
		string s;
		loop(i,0,n) s.pb(sol3[i]);
		return s;
	} 
	string s;
	loop(i,0,k) s.pb('A');
	loop(i,k,n) s.pb(sol[(i-k)%6]);
	return s;
}

int main(){
	ios_base::sync_with_stdio(0);
	int t,n,k;
	cin>>t;
	while(t--){
		cin>>n>>k;
		pln(solve(n,k));
	}
}