Strumming Pattern for Say You Won't Let Go CHORDS by James Arthur

What is the main strumming pattern for Say You Won't Let Go by James Arthur easy and simple?

Strum Pattern 1: d d du.

Strum Pattern 2: d uud uud du.

Strum Pattern 3: same as above, but add palm mute.

Guitar Chords: G | Gsus2/F# | Em7 | C

(Capo on 3rd fret)

How to play Say You Won't Let Go by James Arthur on Guitar Easy