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#include <bits/stdc++.h>

using namespace std;
long long k,n,i,j,u,t,w,xp,xs,ax,ay,g;
int z,pp;
long long m,k1,k2,k3,k4;
vector<long long> x;
long long a[2000005];
long long b[2000005];
bool v[5000];
string s;
int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cin >> t;
	for(u=0;u<t;u++) {
		
		cin >> n >> k;
		if(k>n) {cout << "NIE\n"; continue;}
		if(k==1) {
			if(n==1) cout << "P\n";
			if(n==2) cout << "PA\n";
			if(n>2) cout << "NIE\n";
			continue;
		}
		if(k==2) {
			if(n==2) cout << "AA\n";
			if(n==3) cout << "AAP\n";
			if(n==4) cout  << "AAPP\n";
			if(n>4) cout << "NIE\n";
			continue;
		}
		if(k==3) {
			if(n==3) cout << "AAA\n";
			if(n==4) cout << "AAAP\n";
			if(n==5) cout << "AAAPA\n";
			if(n==6) cout << "AAAPAP\n";
			if(n==7) cout << "AAAPAPP\n";
			if(n==8) cout  << "AAAPAPPP\n";
			if(n>8) cout << "NIE\n";
			continue;
		}
		for(j=0;j<k;j++) cout << "A";
		i=0;
		s="";
		for(i=0;i<k-2;i++)
			s+="P";
		s+="AP";
		for(i=0;i<k-2;i++)
			s+="A";
		while(j<n) {
			cout << s[(j-k)%(2*k-2)];
			j++;
		}
		cout << '\n';
	}
			 
	
}