|  | C1111233131211111211113313331333133313331312331333131211111333133313231323131121133121 
  >> |  | C111123313121111121111331333133313331333131233133313121111133313331323132313112113312 
  << |  | C1111233131211111211113313331333133313331312331333131211111333133313231323131121133123 
  >> |  |