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def solve(n, k):
    # n = k
    if n==k:
        return "A"*n
    # k = 1
    if k == 1:
        if n == 1: return "A"
        if n == 2: return "AP"
        return "NIE"
        
    # k = 2
    if k == 2:
        if n == 2: return "AA"
        if n == 3: return "AAP"
        if n == 4: return "AAPP"
        return "NIE"
        
    # k = 3
    if k == 3:
        s3 = "AAAPAPPP" 
        if n <= 8:
            return s3[:n]
        return "NIE"
        
    # k = 4
    if k == 4:
        if n < 4:
            return "NIE"
        w = "PAAPPA" * ((n // 6) + 1)
        return w[:n]
        
    # k >= 5
    if k >= 5:
        if n < k:
            return "NIE"
        w = "PAAPPA" * ((n // 6) + 1)
        return ("A" * k) + w[:n - k]

t = int(input())
for _ in range(t):
    n,k = [int(x) for x in input().split()]
    print(solve(n,k))