N=int(input())

if N<=2:
  print(-1)
else:
  for i in range(2):
    print("A"+"B"*N+"A"*(N-1))
  
  for m in range(N):
    print("A"+"B"*(2*N-2)+"A")
  
  for j in range(N-2):
    print("A"*(2*N))