C31231211111133131211113313331333132333133313121211113313221323221   >>    C3123121111113313121111331333133313233313331312121111331322132322   <<    C31231211111133131211113313331333132333133313121211113313221323223   >>      C31231211111133131211113313331333132333133313121211113313221323222   >>