SQL Query needed to update Post titles

Hello, my developer create a script to copy all my post from old database to wordpress db
but he forget to add something to the title
the title now look like :
Audi – A8 – 2008<!–:–><!–:ar–>أودي – A8 – 2008<!–:–>
but it should be
<!–en:–>Audi – A8 – 2008<!–:–><!–:ar–>أودي – A8 – 2008<!–:–>

so how can i add <!–en:–> too all posts in phpmyadmin?