building

count_floors = int(input())
count_rooms = int(input())
list_end_floor = []
list_odd = []
list_even = []
list_all = []
# Последен етаж
for room in range(0, count_rooms):
    last_floor = f'L{count_floors}{room}'
    list_end_floor.append(last_floor)
for x in list_end_floor:
    print(x, end=' ')
print()
for floor in range(count_floors - 1, 0, -1):
    list_odd.clear()
    list_even.clear()
    if floor % 2:  # Нечетни етажи
        for room in range(0, count_rooms):
            odd_floor = f'A{floor}{room}'
            list_odd.append(odd_floor)
        for x in list_odd:
            print(x, end=' ')
        print()
    else:
        for room in range(0, count_rooms):
            even_floor = f'O{floor}{room}'
            list_even.append(even_floor)
        for x in list_even:
            print(x, end=' ')
        print()