Hide repeating rows in table

Hi,

I am struggling a bit trying to figure out how to hide repeating rows in a table row of an rtf template. The XML document contains 10 fields per group ( lets assume 20 total groups), of which the first five fields values are repetitive in each group. We are trying to design a report where the first table will show the first five fields of the group and the second table below it will show the remaining 5 fields. As it stands now, the first table is showing 20 repetitive rows and we are trying to make it show only distinct ones.

Any help will be greatly appreciated.