[tlb]

It's properly:

  ---5-7--7-
  --5---5---
  -5-----5--
  7----6----
  ----------
  ----------

although anyone would recognize your version.

[anthonyb]

Probably true, but if you want to get "technical", Jimmy Page never played anything the same way twice :)

Even your version doesn't turn up anything though - just 7 5 5 5 gives a whole bunch of Jon Bon Jovi and Scorpions knockoffs.