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/*
Runda 5 - 
*/

#include<cstdio>
#include<iostream>
#include<algorithm>
#include<string>
#include<vector>
#include<cmath>
#include<queue>
#include<queue>
#include<stack>
#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#include <chrono>

using namespace std;
using namespace __gnu_pbds;

typedef vector<int> VI;
typedef vector<VI> VVI;
typedef long long LL;
typedef unsigned long long ULL;
typedef long double LD;
typedef pair<int, int> PII;
typedef pair<LL, LL> PLL;
typedef vector<LL> VLL;
typedef vector<LD> VLD;
typedef vector<VLL > VVLL;
typedef vector<VLD > VVLD;
typedef vector<PII > VPII;
typedef vector<PLL > VPLL;
template<class T> using min_heap = priority_queue<T, vector<T>, greater<T>>;

#define FOR(x, b, e) for(int x=b; x<=(e); ++x)
#define FORD(x, b, e) for(int x=b; x>=(e); --x)
#define REP(x, n) for(int x=0; x<(n); ++x)
#define VAR(v, n) __typeof(n) v = (n)
#define ALL(c) (c).begin(), (c).end()
#define SIZE(x) ((int)(x).size())
#define FOREACH(i, c) for(VAR(i, (c).begin()); i != (c).end(); ++i)
#define PB push_back
#define ST first
#define ND second
#define THIS (*this)
#define LSB(x) (x & -x)
#define SQR(x) ((x)*(x))

int main() {
	ios_base::sync_with_stdio(0);
    cin.tie(NULL); cout.tie(NULL);
    int t; cin >> t;
    string fill = "APPAAP";
    while (t--) {
        int n, k; cin >> n >> k;
        if (k == 1 && n > 2 || k == 2 && n > 4 || k == 3 && n > 8) cout << "NIE\n";
        else if (k == 2) {
            string longest = "AAPP";
            cout << longest.substr(0, n) << '\n';
        } else if (k == 3) {
            string longest = "AAAPAPPP";
            cout << longest.substr(0, n) << '\n';
        } else {
            string ans; ans.reserve(n);
            REP(i, k) ans.PB('A');
            if (k < n) ans.PB('P');
            int i = 0;
            while (ans.size() < n) ans.PB(fill[i++ % fill.size()]);
            cout << ans << '\n';
        }
    }

    return 0;
}