C1111233131211111211113313231333133313331323331333133313232222332321   >>    C111123313121111121111331323133313331333132333133313331323222233232   <<    C1111233131211111211113313231333133313331323331333133313232222332323   >>      C1111233131211111211113313231333133313331323331333133313232222332322   >>