1- Reproducing icons
Select one icon, hold the Ctrl key, and select the other icon to select both at the same time. Then by pressing Ctrl+C. And Ctrl+V Duplicate them.
Creating colorless icons with outer margins
Now for reproduced icons, you need to remove their interior color and maintain only the color of the margin. To do this, select the first reproduction icon to the route Graphics outline Go and apply the color you have selected for the icon as the color of the icon.
Then to Graphics Fill Go and the option NO Fill Select. Do this process for both reproductive icons. Now you have to have four icons: Two full icons and two empty icons.