b.ReportAllocs()
			for i := 0; i < b.N; i++ {
				randOperand().Intersection(randOperand())
			}
		})

		b.Run(fmt.Sprintf("symmetric-difference-%v", here.size), func(b *testing.B) {
			b.ReportAllocs()
			for i := 0; i < b.N; i++ {
				randOperand().SymmetricDifference(randOperand())
			}
		})

		b.Run(fmt.Sprintf("list-%v", here.size), func(b *testing.B) {
			b.ReportAllocs()