can anyone tell me how to dupe?

can anyone tell me how to dupe please? i really really need it :(
i wanna get as much items as needed to kill my opponents and build a great house

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i would also like to note that my enemy is duping aswell, that is the main reason i wanna dupe too

Sadly there are only chinese/russian duppers or their friends, i saw a guy on youtube that was duping, with a chinese program. Try to make that guy ur friend and he will tell u , good luck trying to do it.