1st riff:
These are the chords (2nd gtr.):
Eb B Ab Eb
And these are the notes (1st gtr.):
Eb Eb F Gb B Bb Ab Ab B Bb Gb Eb
Play them like this:
2nd gtr.: Eb B Ab Eb
1st gtr.: Eb Eb F Gb B Bb Ab Ab B Bb Gb Eb
2nd riff:
These are the chords (1st & 2nd gtr.):
Eb Db Ab Db
Play them like this:
2nd gtr.: Eb Db Ab Db
1st gtr.: Eb Eb Eb Eb Eb Db Db Db Db Db Ab Ab Ab Ab Ab Db Db Db Db Db
All you need to do is play one riff, then
change to the other riff when the music does.