SSRS Matrix with customized column

I need to create a report in SSRS 2008. it's in the matrix format, but instead of normal columns that grows to the right, they want something like stepped rows only for column
Something like this:

    col1
        col2
            col3
row1
row2
row3

instead of the standard matrix

    col1 col2 col3
row1
row2
row3

Can anyone suggest to me how to do this?

Thanks!

EDIT: I include an url that hopefully help to clarify things a bit. I basically need to create a report in SSRS that resemble this below:
(sorry, unable to include image yet since I'm a new member)

http://imageshack.com/a/img633/7375/JB1wPE.jpg