07. Building

floor = int(input())
number_of_rooms = int(input())

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