Hummingbird Bass

Song's in the key of G (E string 3rd fret) and the entire song for the bassline is just
G major scale.. I've got some incorrect tabbing for the intro and breakdown at the end
I'll leave them off here.. figure it out yourself:
 
(G major scale is G|-----------------2-4-5-|
                  D|-----------2-4-5-------|
                  A|-----2-3-5-------------|
                  E|-3-5-------------------|)
 
 
main bass riff is this:
 
G|-----------|------------|------------|
D|---542-2222|------------|2-----------|
A|-----------|523--5-5-55-|--2-222320—-|
E|33---------|------------|------------|
X