Building

floors = int(input())
rooms = int(input())

for i in range(floors, 0, -1):
  for j in range(rooms):
    if i == floors:
      print(f" L{i}{j}", end="")
    elif i % 2 == 0:
      print(f" O{i}{j}", end="")
    else:
      print(f" A{i}{j}", end="")
  print()