Another one bites the dust

 [Riff 1...........................End]
G|------------------------------------|--------------------------------|
D|------------------------------------|--------------------------------|
A|------------------------------------|--------------------------------|
E|-5-3--0---0---0------0---0-0-3-0-5--|-5-3--0---0---0------0-0-3-0-5--|

 [Riff 2...........................End] 
G|------------------------------------|--------------------------------|
D|------------------------------------|--------------------------------|
A|------------------------------------|--------------------------------|
E|----0---0---0-------0--0-0-3-0-5----|----0---0---0-----0--0-0-3-0-5--|
  
G|------------------------------------|--------------------------------|
D|------------------------------------|--------------------------------|
A|------------------------------------|--------------------------------|
E|----0---0---0-------0--0-0-3-0-5----|----0---0---0-----0--0-0-3-0-5--|

                                      [Riff 3...........................
G|------------------------------------|--------------------------------|
D|------------------------------------|---------------------5----------|
A|------------------------------------|---3--3---3----4--5-------------|
E|----0---0---0-------0--0-0-3-0-5----|-------------------------3------|

 .............................................End]
G|----------------------|------------------------|---------------------|
D|----------------------|----------------5-------|---------------------|
A|--3-3---3---4-5-------|--3-3---3---4-5---------|---------------------|
E|------------------3---|--------------------3---|-5-5---5---6-7---7-3-|


G|--------------------|----------------------------|-------------------|
D|-repeat riff 2  3x -|----------------------------|- repeat riff 2 4x-|
A|--------------------|----------------------------|-------------------|
E|--------------------|-2-----7-6-5-5-5----2-----3-|-------------------|

G|--------------------|--------------------|---------------------------|
D|-repeat riff 3  1x -|--------------------|---------- play -----------|
A|--------------------|--------------------|-- riff 2, riff 1, riff 2--|
E|--------------------|-5-5---5---6-7----3-|---------------------------|

G|------------------------------------|--------------------------------|
D|------------------------------------|--------------------------------|
A|------------------------------------|--------------------------------|
E|---2-----7-6-5-5-5----2-----3--0----|-3-5-0---0---0----0--0-0-3-0-5--|

G|-----------------------------------------------|---------------------|
D|--------------------- play --------------------|---------------------|
A|-- riff 2 1x, riff 1 1x, riff 2 1x, riff 3 1x -|---------------------|
E|-----------------------------------------------|-5-5---5---6-7---7-3-|

G|---------------------------------|----------------------------------|
D|-- play riff 2, riff 1, riff 3 --|----------------------------------|
A|---------------------------------|----------------------------------|
E|---------------------------------|---2-----7---6-5-5-5------2-----3-|

|---------------------------------|----------------------------------|
|-- play riff 1, riff 2, riff 3 --|----------------------------------|
|---------------------------------|----------------------------------|
|---------------------------------|--5-5---5---6-7---7-3---0---------|