Try these, fudge them a round a bit. I don't do cut and dried chords, usually, which is why I suck! :>))

C~~~~G~~~~~Am~~~~G
Ooo-oooo-ooo-ooo

C~~~~G~~~~~Am~~~~G
Ooooo-oooooo-ooooooo-ooo

C~~~G~~~Am~~~G~~F~~~~~~~C~~G~~Am
If I had a hammer, I'd hammer in the morning
~~~~~~~~ C~~G~~Am~~~~F~~~~~~G
I hammer in the evening, all over this land!
~~~~~~~~~~~~~C~~~Am~~~~~~~~~C~~~~~~~Am
I'd hammer out justice, I'd hammer out a warning!
~~~~~~~~~~~~F~~~~~~C
I'd hammer out love between
~~F~~~~~~~~~~~~C~~~~~~
My brothers and my sisters,
~~F~~~C~~G~~~~C~~G~~Am~~G
A-a-a-ll over this laaaaaaaaaaaaand,
C~~~~G~~~~~Am~~~~G
Oooooooo  ooooo  oooooo  ooooo