How do you play lean on me piano using letters?

Here is the piano arrangement for "Lean On Me" using letters that represent notes:

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Verse 1:

GG B BGG EED GG (A)

GG B GGG EED GG (A)

Pre-Chorus:

D D D DEE GG (A)

EEEE EEE GG (A)

Chorus:

G D Em G D Em C

Lean on me, when you're not strong

G D Em G D Em C

And I'll be your friend, I'll help you carry on

Verse 2:

GG B BGG EED GG (A)

GG B GGG EED GG (A)

Pre-Chorus:

D D D DEE GG (A)

EEEE EEE GG (A)

Chorus:

G D Em G D Em C

Lean on me, when you're not strong

G D Em G D Em C

And I'll be your friend, I'll help you carry on

Bridge:

G Em C G Em C

I'll help you carry on, help you carry on,

G D Em G

Until you're well on your way

G Em C G Em C

I'll help you carry on, help you carry on,

G D Em G D Em C

Until you're well on your way

Chorus:

G D Em G D Em C

Lean on me, when you're not strong

G D Em G D Em C

And I'll be your friend, I'll help you carry on