Help for TSQL query

Hi,

I want to design query. Below are the required:

Existing Table :
Code   Val1   Val2   Val3

A       A11      -         -

B        -       B22        -

C        -       -         C33

Output required: 　

Code  Col1  Col2
A       A11   B22
B       B22   C33
C       C33  -

Can anyone help with the query?