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#include<bits/stdc++.h>
using namespace std;
void solve(){
	int n,k,i,j;
	cin >> n >> k;
	if(k*2>=n){
		n-=k;
		string a,p;
		a.resize(k,'A');
		p.resize(n,'P');
		cout << a << p << '\n';
	}
	else{
		if(k==1 or k==2){
			cout << "NIE\n";
		}
		else if(k==3){
			if(n==7)	cout << "AAAPAPP\n";
			else if (n == 8) 	cout << "AAAPAPPP\n";
            else 	cout << "NIE\n";
		}
		else{
			string a(k,'A');
			string p="PAPPAA";
			for(i=0;i<n-k;++i){
				a+=p[i%6];
			}
			cout << a << '\n';
		}
	}
}
int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int t;
	cin >> t;
	string a,p;
	while(t--){
		solve();
	}
}