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#include <iostream>

using namespace std;
int n, x, y, k[1000000], t[1000000];
int main()
{
    cin >> n;
    for (int i = 0; i < n; i++)
    {
        cin >> k[i] >> t[i];
    }
    for (int i = 0; i < n; i++)
    {
        if(k[i]%2==0)
        {
            if(k[i]/2>t[i])
            {
                cout << "NIE" << endl;
            } else
            {
                for(int j = 0; j < t[i]; j++)
                {
                    cout << "A";
                }
                for(int j = 0; j < k[i] - t[i]; j++)
                {
                    cout << "P";
                }
                cout << endl;
            }
        }else
        {
            x = k[i] - 1;
            if(x/2>t[i])
            {
                cout << "NIE" << endl;
            } else
            {
                for(int j = 0; j < t[i]; j++)
                {
                    cout << "A";
                }
                for(int j = 0; j < k[i] - t[i]; j++)
                {
                    cout << "P";
                }
                cout << endl;
            }
        }
    }

    return 0;
}