*Bass joins in after guitar plays riff twice*
|---------------4-5-6-|
|---------4-5-6-------|
|---4-5-6-------------|
|-5-------------------|
Then you into something like this:
|---------------------|
|---------------------|
|------5-5-------3-3--|
|-5-5------3-3--------|
Or this: (not sure, sorry)
|---------------------|
|---------------------|
|------7-7-------5-5--|
|-7-7------5-5--------|
Basically just repeat that, sorry for inaccuracy, but it'll give you an idea.