There is pretty accurate without having to change tuning.

Cap III

Intro: ||: G - B7 - em :|| - D - C - D - G

||: G - B7 - em - C :|| - D
Baby 
It's been a long day
Baby 
Things ain't been going my way
And know I need you here
Here by my side 
All the time

||: G- (320003@1)B7- (x21202@1)em - C:|| (x32010@1)- D (xx0232@1)Baby 
The way you move it's crazy
It's like you see right through me and
Make it easier
To please me,
You don't even have to try
Oh because...

Chorus ||: G - B7 - em - C :|| - D - C - D - G 
You are the best thing (you're the best thing)
You are the best thing (you're the best thing baby)
You are the best thing (you're the best thing)
Ever happened to me

Baby 
You've come a long way
Baby 
You know I hope and I pray
That you believe me
When I say this love will never fade way
Oh because...

(Repeat Chorus)

Bridge
em			bm
Both of us have know love before,
em			bm
Come on all promising like we're saying
			CWe'll (x32010@1)walk on out the door
		GHearts (320003@1)are strong
Our hearts are kind
C (x32010@1)Let me tell you 
`	DJust (xx0232@1)exactly what's on my mind...


(Repeat Chorus x 3)