|  | C1111233131211111211113313331333133313232321333133313331211113313331333121111331323133313232222131 
  >> |  | C111123313121111121111331333133313331323232133313331333121111331333133312111133132313331323222213 
  << |  | C1111233131211111211113313331333133313232321333133313331211113313331333121111331323133313232222133 
  >> |  |