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import sys


input = sys.stdin.readline
t = int(input())
out = []

# dane poczatkowe
db = {
    1: {
        1: "A",
        2: "PA"
    },
    2: {
        2: "AA",
        3: "AAP",
        4: "AAPP"
    },
    3: {
        3: "AAA",
        4: "AAAP",
        5: "AAAPA",
        6: "AAAPAP",
        7: "PPPAPAA",
        8: "AAAPAPPP"
    }
}

for _ in range(t):
    line = input().strip()
    if not line:
        continue
    n, k = map(int, line.split())

    if n < k:
        print("NIE")
        continue

    if k <= 3:
        if n in db[k]:
            print(db[k][n])
        else:
            # długie słowo musi miec krótki palindrom
            print("NIE") 
    else:
        s = ["A"] * k
        pattern = "PPAPAA"
        
        for i in range(n - k):
            s.append(pattern[i % 6])
            
        print("".join(s))