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Want to Display the Output as ALV Grid Type.

Updated May 19, 2018

I have three internal tables with final data to be displayed... 
I want to display the output as ALV grid type.
Am using reuse_alv_grid_display function module. 
But in this function module I can only display one internal table.
Can anyone guide me how to achieve a final internal table which consists of all the three internal table's data?