Follow these steps.

1.Go to a place where you can steal things like a shop or something like that.

2.While in the shop do the duplication glitch,and make sure the item you are willing to duplicate is more than one.

3.Once you have done the glitch press A to pick up the item you just duplicated.

4.When it says how many to pick up chose a number,but do not pick them all up.

The number left still on the ground is how many stolen items there will be.Unfortunetly you will have to fight your way through unless the merchant does not see you pick up the stolen items.

That's all there is to it.

Enjoy.

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Thanks.