1)
What is "Nechochah"?
1.
Rashi: It is straight. Malbim ? this is in matters Bein Adam la'Makom.
2)
Why does it say that they do not know to do "Nechochah"?
1.
Radak: Do not say that sometimes they do evil, and sometimes good ? they do not know to do even one straight matter.
3)
What Chamas and Shod are in their palaces?
1.
Rashi: They are stolen money.
2.
Malbim: This explains "va'Ashukim b'Kirbah" (9).