Empty Spaces (12th position)

, Pink Floyd

-1   -1   -1  2
What shall we use
2   -2” -2”  2 2   -1 -1
To fill the empty spaces
  2   2  -2”  -2” -2” 2
Where we used to ta-lk?
-1   -1   2  2
How shall I fill
 2 -2” -2”  2 2  
The final places?
-1    -1   2   2 -2”  -2”   2
How should I complete the wall?