1)
What is "Shamemu"?
1.
Rashi: It is an expression of Timhon (astonishment).
2.
Malbim: They will mourn over your affliction.
2)
What are "Balahos"?
1.
Refer to 26:21:1:1-3.
2.
Malbim: It is as if you were a demon and flash ? suddenly it is hidden and not found.