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t = int(input())

LOOP = "APAAPP"
for _ in range(t):
  n, k = [int(component) for component in input().split(" ")]
  if k == 1:
    if n == 1:
      print("A")
    elif n == 2:
      print("AP")
    else:
      print("NIE")
  elif k == 2:
    if n == 2:
      print("AA")
    elif n==3:
      print("AAP")
    else:
      print("NIE")
  elif k == 3:
    if n == 3:
      print("AAA")
    elif n == 4:
      print("AAAP")
    elif n == 5:
      print("AAAPA")
    elif n == 6:
      print("AAAPAP")
    elif n == 7:
      print("AAAPAPP")
    elif n == 8:
      print("AAAPAPPP")
    else:
      print("NIE")
  elif k==4:
    if n == 4:
      print("AAAA")
    elif n == 5:
      print("AAAAP")
    else:
      raw = LOOP * (n // len(LOOP) + 1)
      print(raw[:n])
  else:
    raw = "P" * k + LOOP * ((n-k) // len(LOOP) + 1)
    print(raw[:n])