Am               /b C
Oh way deep down in the green wood-o
G                        Am
Rappa-tappa-tappin' on a window
Am          /b    C
A young blade and a ramblin' boy
G                   Am
Across the wide river to go
C         F         C         G
The river is wide, the river is deep
C       F       C       G       Am
All within' the cottage seemed asleep

pick the strings with alternate bass:

example for Am: thumb 5th string/middle finger 2th string/thumb 4th string/fore finger 3d string

have fun!

alfred