C33331211113313331211113313331333133313221121211113313232212121   >>    C3333121111331333121111331333133313331322112121111331323221212   <<    C33331211113313331211113313331333133313221121211113313232212123   >>      C33331211113313331211113313331333133313221121211113313232212122   >>