Hi,
U can do it in 2 ways
1) Using nested LOOP , i.e
LOOP.
code block___________
____________________
LOOP.
*/your code here
ENDLOOP.
ENDLOOP.
2)v_counter = 0.
LOOP AT ITAB into WA.
*/your code here
v_counter = v_counter + 1.
ENDLOOP
DO v_counter times.
*/Your code here
ENDDO.