C312312111111331312111133133313331333133313232233133313331333133313223331323231   >>    C31231211111133131211113313331333133313331323223313331333133313331322333132323   <<    C312312111111331312111133133313331333133313232233133313331333133313223331323233   >>      C312312111111331312111133133313331333133313232233133313331333133313223331323232   >>