from itertools import count
BOARD_SIZE = 8

def main() -> None:
    first_player = input().split()
    board_list = [input().split() for _ in range(BOARD_SIZE)]
    board_flatten: str = ''.join([x for row in board_list for x in row])
    if count_tiles(board=board_flatten) % 2 == 0:
        print(*first_player)
    if count_tiles(board=board_flatten) % 2 == 1:
        print(who_is_second(first_player=first_player))

def count_tiles(board: str) -> int:
    count_b = board.count("b")
    count_w = board.count("w")
    return count_b + count_w

def who_is_second(first_player: str) -> str:
    if first_player[0] == "oda":
        return "yukiko"
    if first_player[0] == "yukiko":
        return "oda"

if __name__ == "__main__":
    main()