The intro riff goes just like this
(Repeated)
|-----------------------------------------------------------------|
|-----------------------------------------------------------------|
|-----------------------------------------------------------------|
|---2---5-------7-------5---2-------------------------------------|
|---0---3---0---5---0---3---0-------------------------------------|
|-----------------------------------------------------------------|
And the verse riff is just
a variation of the Intro riff
| first part |
|-----------------------------------------------------------------|
|-----------------------------------------------------------------|
|-------------------------------2-----------2-----------2---------|
|---2---------------------------2-----------2-----------2---------|
|---0---3---0---5---0---3---0-------0---0-------0---0-------------|
|-----------------------------------------------------------------|