06. Building

floors = int(input())
rooms_per_floor = int(input())

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