< { defv }' /put deff > /hashSet defv 1 /one hashSet .put 2 /two hashSet .put hashSet .one dump hashSet .two dump hashSet keys dump { < { defv }' /put deff > /hashSetB defv 1 /one hashSetB .put 2 /two hashSetB .put hashSetB .one dump hashSetB .two dump hashSetB } * keys dump