At first, I had 4-box BE Paladin "Sanctume" + 3 Tauren Shamans "Azzhat, Aszhat, and Azhat."

But I got reported, so now they are Sanctume, Sanctumea, Sanctumei, and Sanctumeo.

As for Formation:
0
X = 3 shamans overlapped each other.

Clearly you will see the Belf infront. It worked well when I was Prot and I get focused fire and occasionally throw a shield.

I changed to Shockadin and I then placed my Paladin inside the Tuarens with good effect "hidden nuker/healer"