Printing Original and Duplicated Purchase Orders

Hy people! i have one doubt! i have an xml that have 10 purchase orders. i use this command to get duplicated purchase orders <?for-each@section:xdoxslt:foreach_number($_XDOCTX,1,var,1)?> . In layout i have 20 purchase orders. the first 10 are the original and the last 10 are duplicated! my doubt are: i want to put the "original" in the first 10 purchase orders and "duplicate" in the last 10 purchase orders . someone have any suggestion? any help would be appreciated.