# Erosion in image

I don't if I am posting my question in the correct place. I have tried hard to solved it but I am unsuccessful.
I have an structuring element shown below:

1 1 1
1 1 1
1 1 1


My image is:

11   11
11   11
11   11
11   11
1111111
11   11
11   11
11   11
11   11
11   11


I have to apply erosion using the above image and structuring element (It is not programming, it is a question from exam paper). When I apply the structuring element on the image, I found that the overall image disappear.