|  | C1111233131211111211113313331333133313331122212111112111112111133133313331311331333131211111232313121 
  >> |  | C111123313121111121111331333133313331333112221211111211111211113313331333131133133313121111123231312 
  << |  | C1111233131211111211113313331333133313331122212111112111112111133133313331311331333131211111232313123 
  >> |  |