I think it's a german text ,so good luck Phas

I did just email the author,
sure it is a german task..
I will ask for a english plain<->cypher example.
perhaps i may translate (dont think so but I´ll see)

c ya

ask him for the way to create your own

If someone has further questions,
dont hasitate to ask here or just pm me.

If something new is know i will post it here.
Until now i had no response from the author.

Have a nice stack today