This is just the very beginning of the song. And to be honest it is not the same way
that the song is actually played. This sounds exactly right minus the open B string note.
I'm not really a guitar player but I've had people asking about how I personally play
it. So here ya go. Hope this helps someone figure out the real way.
[ Tab from: https://www.guitartabs.cc/tabs/c/christina_perri/penguin_tab.html ]
e--12---12---11---11---7---7----9---9---7---7---5---5---5---5----4--4----|
B----9----9----9--------4---4------------4---4---2-------0---0----0------|
G-----9----9----9--------4---4---8--------4---4---2-------2---2----1-----|
D---------------------------------9--------------------------------------|
A------------------------------------------------------------------------|
E------------------------------------------------------------------------|