DaF; Deutsch als Zweitsprache; German as a second language; DaZ; German as a foreign language ; Transfer (language teaching) ; Transfer (Sprachunterricht) ; Interference (language teaching) ; Falko ; Frequency (synt.) ; Transfer (second language acquisition) ; Transfer (Zweitspracherwerb) ; Cross-linguistic influence (second language acquisition) ; Interference (second language acquisition) ; Wortstellung; Satzfolge; Serialisierung; Serialization; Word order ; Prolepsis (synt.) ; Stylistic fronting; Fronting, stylistic; Vorfeldbesetzung; Topicalization ; German