C31231211111133131211113313331333133313331323223313331333133313331323322121   >>    C3123121111113313121111331333133313331333132322331333133313331333132332212   <<    C31231211111133131211113313331333133313331323223313331333133313331323322123   >>      C31231211111133131211113313331333133313331323223313331333133313331323322122   >>