Row level hidding in Deski report

Hi

We are trying to hide rows based on condition in Deski report, 

Column 1      Column 2

     1X                 A

     1X                 B

     2X                 A

     3X                 B

OUTPUT in the report has to be like below.

Column 1      Column 2

     1X                 A

     2X                 A

     3X                 B

If we have two records for column1 for 1X,1X , it has to disply only one record in the report  A, the B value must be hidden.

Please give your valuable inputs and solutions

Thanks

Arun K