бути дійсним, діяти, мати валідність, цінуватись, вважатися, важливо, вважати, вважати дійсним @Em1 I removed the comma (it welches a cut+paste from question). Hinein another comment you wrote One day you maybe will learn the grammar in school but I guess most German natives do not remember anything of all that https://das19086.blogthisbiz.com/39741727/indikatoren-für-gilt-sie-wissen-sollten