* EZ

One parent has a schutzhund title

* GZ

Both parents have schutzhund titles

* LZ

Both parents and all 4 grandparents have schutzhund titles.

* KZ

Both parents have schutzhund titles and korungs: but at least one of the grandparents does not have schutzhund title

* KLZ

Both parents have schutzhund titles and korungs; all 4 grandparents have schutzhund titles