Clone multiple times

hi everyone, 

I need help on how to clone SAME assembly (and its parts) multiple times (with naming rule).

for example:

I have:

Main_assy_01.prt

part_A_01.prt

part_B_01.prt

and I want to be able (may be through log file?) to clone that assy and its parts multiple times in one operation:

Main_assy_02.prt

part_A_02.prt

part_B_02.prt

Main_assy_03.prt

part_A_03.prt

part_B_03.prt

Main_assy_04.prt

part_A_04.prt

part_B_04.prt

and so on..

Now I have to do it manually ( I mean, by cloning... but one each time, problem is I have to do this like ten or twenty times, with multiple different assemblies). Right now still working with NX9 (but we are about to upgrade to nx11)

thanks in advance.