C312312111111331312111133133313331333133313232233133313331333133313231322112111   >>    C31231211111133131211113313331333133313331323223313331333133313331323132211211   <<    C312312111111331312111133133313331333133313232233133313331333133313231322112113   >>      C312312111111331312111133133313331333133313232233133313331333133313231322112112   >>