Seems like the correct chords should be:
G C/G G D7 G
Silly words of poetry, photographs in rhyme.
G C/G G D7 G
Dancing words that seem to be but measurements in time.
G C/G G D7 G
Words that have a simple sound, meanings of their own.
G C/G G D7 G
Hidden phrases sing to you with difference of tone.
Em D7 Em D7
And though you may not understand the things I say and do,
G C/G G D7 G
Reality is bad enough, why should I tell the truth?
Only the intro and bridge have the G-C-D-G progression. Also there is a G-D-C-G-D7-G in the bridge part.
I have to confess that I didn't pay enough attention when I posted the wrong chords years ago.