Tricks: You can use a C for Cadd9 (makes it a little easier). But, Cadd9 sounds better to my ears.

E5 C5 G5 D5 E5 C5 G5 D5 C5


Verse 1

      G5        C5
Got a guitar
      G5            C5
Got a guitar on my back
        E5               D5        C5        G5       C5
And I'm standin' on this lonesome railroad track
          G5        C5
Train's a comin'
      G5                 C5
It'll be here 'fore too long
      E5                D5       C5         G5
But I don't think I can stop it with a song
            A5         C5       G5
Girl that's kind of the way I'm feelin'
A5       C5          
Tryin' to stop your leavin'


Verse 2

      G5        C5
Got a pebble
      G5            C5
Got a pebble in my hand
      E5                   D5             C5   G5       C5
And I toss it out into the middle of the Rio Grande
                    G5        C5
But the river keeps runnin'
           G5               C5
Don't even know that I'm around
        E5                 D5        C5           G5
I could throw in a million more and not slow it down
            A5         C5       G5
Girl that's kind of the way I'm feelin'
A5       C5         E5         C5
Tryin' to stop your leavin'


Bridge

G5                    D5             E5     C5
There's nothin' that I wouldn't try
G5                     D5              C5
If I thought it would change your mind


Verse 3 (palm mute or arpeggio)

              G5          C5
But you don't love me
             G5           C5
No you don't love me anymore
      E5              D5        C5        G5
And I know as soon as you walk out that door
          G5         C5  
Train's a comin'
        G5           C5     
river's runnin'
          G5               C5
Train's a comin', river's runnin'
         G5                 C5
Pain's a comin', tears are runnin'
            A5         C5       G5
Yeah that's kind of the way I'm feelin'
        A5        C5         E5       C5  G5  D5
Knowin' I couldn't stop your leavin'


E5 C5 G5 D5 (ending in G5 )