Those top two lines have done rather well for the D since the break. Helm and Eaves are quite good enough for a third line. The fourth line is going to be really hard to predict, however. On the one hand, you might want to see Abdelkader over Williams as a Detroit fan. On the other hand, Babs loves that righthanded shot from the point. So you could possibly see:
Miller - Draper - Williams
Abdelkader - Draper - Williams
(I doubt Miller sits, he's been a very solid grinder)
Abdelkader - Draper - Miller
Personally, I'd much prefer that as a playoff 4th line over Williams, but again, that point shot...
It's also possible with Babs you'll see him go deep at center:
Franzen - Datsyuk - Holmstrom
Cleary - Zetterberg - Bertuzzi
Miller - Filppula - Williams
Draper - Helm- Eaves
Defensive pairings are a lot more predictable:
Lidstrom - Rafalski
Kronwall - Stuart
Ericsson - Lilja
Unless someone on the bottom pairing invites the death stare.