C312312111111331312111133133313331333133313232233133313331333133313231311333231   >>    C31231211111133131211113313331333133313331323223313331333133313331323131133323   <<    C312312111111331312111133133313331333133313232233133313331333133313231311333233   >>      C312312111111331312111133133313331333133313232233133313331333133313231311333232   >>