There's no break between each riff but play everthing dead slow.
(~ vibrato)
e|------------------|B|------------------|G|------------------|D|------------------|A|0-0-0-0-0-0-0-0-0-|E|------------------|
Riff 1e|4~-5~--0----2~-1~-------|B|--------------------2~--|G|------------------------|D|------------------------|A|0----0---0--------0-----|E|------------------------|
Riff 2e|----2~-1~--------|B|------------2~---|G|-----------------|D|-----------------|A|-0--------0------|E|-----------------|
Riff 2ae|------------------|B|----1~--2~--------|G|--------------1~--|D|------------------|A|-0----------0-----|E|------------------|
Riff 3e|-------------------|B|--1-----2----------|G|-------------------|D|-------------------|let ring.A|--0-----0----------|E|-------------------|
And i goes in this order:
Riff 1(x2), Riff 2(x1), Riff 2a(x2), Riff 3(x1). Then repeat everything in the same way
without any of the 2a's.