|  | C1111233131211111211113313331333133313232212111133131133133313331333131211113311211313321 
  >> |  | C111123313121111121111331333133313331323221211113313113313331333133313121111331121131332 
  << |  | C1111233131211111211113313331333133313232212111133131133133313331333131211113311211313323 
  >> |  |