Master has given Dobby a pen. Dobby is free to write whatever he wants!

On this account,
We solemnly swear we're up to no good
As brave as Gryffindor
As intelligent as Ravenclaw
As loyal as Hufflepuff
As cunning as Slytherin
We find happiness by turning on the light 
We know the answers can be found on page 394
We have become the master of all the Deathly Hallows because on this account we do Harry Potter
Always