King Crimson - One More Red Nightmare tab

"One More Red Nightmare"
Artist -- King Crimson
Album  -- "Red"

This is the intro part:

Riff 1 |--------------------------|
       |--------------------------|
       |--------------------------|
       |--------------------------|
       |------1-------1------1----|
       |0--4----0--4----0--4---0--|

Riff 2 |--------------------------|
       |--------------------------|
       |--------------------------|
       |---0--2----0--2----0-2----|
       |1-------1-------1-------1-|
       |--------------------------|
[ Tab from: http://www.guitaretab.com/k/king-crimson/68040.html ]
Riff 3 |--------------------------|
       |--------------------------|
       |--------------------------|
       |---2--4---2-4---2-4-------|
       |3-------3-----3-----------|
       |--------------------------|

Riff 4 |-12-9---14-12---15-14---7-9-|
       |----------------------------|
       |----------------------------|
       |----------------------------|
       |----------------------------|
       |----------------------------|

The song goes like this:

Riff 1 (repeat)

Riff 2

Riff 1

Riff 2
Riff 3

Riff 4 lyrics begin
Riff 4 lyrics end

Riff 1

Riff 2

Riff 1

Riff 2
Riff 3

Riff 4 lyrics continue
Riff 4 lyrics end

After this there is a big gap in the middle and then it goes back to this sequence,
but slightly differently in timing.