Space invader/intro

Riff 1 
 
e|---------------------------------------------------------------------| 
B|---------------------------------------------------------------------| 
G|---------------------------------------------------------------------| 
D|--12 -xx- 12 -xx- 15 -15---12-xx-12-xx-15-15-------------3h5-3-------| 
A|--12 -xx- 12 -xx- 15 -15---12-xx-12-xx-15-15---------3h5-------------| 
E|--10 -xx- 10 -xx- 13 -13---10-xx-10-xx-13-13----/3h5-----------------| 
 
Riff 2 
 
e|---------------------------------------------------------------------| 
B|---------------------------------------------------------------------| 
G|---------------------------------------------------10----10-1212b----| 
D|--12 -xx- 12 -xx- 15 -15---12-xx-12-xx-15-15----12----12-------------| 
A|--12 -xx- 12 -xx- 15 -15---12-xx-12-xx-15-15-------------------------| 
E|--10 -xx- 10 -xx- 13 -13---10-xx-10-xx-13-13-------------------------| 
 
Then repeat riff 1 And then riff 3 
 
Riff 3 
 
e|---------------------------------------------------------------------| 
B|---------------------------------------------------------------------| 
G|---------------------------------------------------10----10-1212b----| 
D|--12-xx-12-xx-12-xx-12-xx-12-xx-12-xx-----------12----12-------------| 
A|--12-xx-12-xx-12-xx-12-xx-12-xx-12-xx--------------------------------| 
E|--10-xx-10-xx-10-xx-10-xx-10-xx-10-xx--------------------------------| 
 
Then riff 1 and after riff 4 
 
Riff 4 
 
e|---------------------------------------------------------------------| 
B|---------------------------------------------------------------------| 
G|-------------------------------------------------12b-12b-12-10-------| 
D|--12-xx-12-xx-12-xx-12-xx-12-xx-12-xx--------------------------12----| 
A|--12-xx-12-xx-12-xx-12-xx-12-xx-12-xx--------------------------------| 
E|--10-xx-10-xx-10-xx-10-xx-10-xx-10-xx--------------------------------|