Building 6/11

floor_cnt = int(input())
rooms_cnt = int(input())

if floor_cnt == 1:
    for room_num in range (0,rooms_cnt):
        print(f'L1{room_num}', end=' ')

else:
    for floor_num in range(floor_cnt,0,-1):
        for room_num in range (0,rooms_cnt):
            if floor_num == floor_cnt:
                print(f'L{floor_num}{room_num}', end =' ')
            elif floor_num % 2 == 0:
                print(f'O{floor_num}{room_num}', end=' ')
            else:
                print(f'A{floor_num}{room_num}', end= ' ')
        print('')