Fleetwood Mac - The Chain Bass

There is no bass for about the first minute of the song.
Then, at:

"And if you don't love me now..."

G:|-----------------|----------------------------|
D:|-----------------|----------------------------|
A:|-----------------|----------------------------|
E:|-5-5-5-5-5-5-5-5-|-5/12-12-10-8-8-8-10-10-10....

Then it repeats itself once, and then the bass cuts out again.

Later, it does basically the same thing, with a couple little frills,
like some 5-3-5 bits in the first part.

Then the end part goes like this:

G:|---------------------|
D:|---------------------|
A:|-0-0-2-3-2-0---0-2---|
E:|-------------3-----0-|

It repeats itself over and over, with a few slides and such thrown in
for fun.