Screen Description: Forgotten Username

The English translation of the various parts of this screen is given below the screenshot. Each part of the image has a reference number from top to bottom.

1. Title: Forgotten Username
2. Instruction text: We can send you your username by e-mail if you fill in your citizen service number (BSN) or Legal Entities and Partnerships Identification Number (RSIN) and password below. If they match our information, we will send you your username by e-mail.
3. Input field: BSN/RSIN
4. Input field: Password
5. Subtitle: Security code
6. Solve this calculation and give the answer in numbers. For example: the answer to '? + 5 = 8' is '3'. This is used to verify that you are a person and not a computer.
7. Fill in the missing number:
   [input field where you enter the missing number] + <the number shown on the screen> = <the sum of both numbers>
8. Button: OK
9. Button: Cancel