Display checked out originals

Hi!

I am developing a program which purpose is to <b>display all checked out originals</b> per user (or a group of users). I've managed to get a hold of all originals which have been checked in and then checked out again, via tables such as:

dms_ph_chko_cd1
dms_ph_cd1
dms_doc2loio
draw

The problem is how to find the originals which has only been attached to the document (DIR), but have <b>not yet been checked in</b> (i.e. the original is marked as checked out, but it has not yet been checked in for the first time).

Are there any <b>tables</b> in which I can locate these originals?

Thank you for all your help!

Mari