Declension of the word "achteck"
Singular and plural for Achteck,
n, strong declension 
octagon
Popular German Verbs
vögeln
liefern
beobachten
daran sein
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sieben
brauchen
sich verbringen
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reisen
reduzieren
wiederholen
gebieten
sich betonen
hindern
German Verb Conjugation and Word Forms Online
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The service shows German verb conjugation in Präsens, Präteritum, Perfekt, Plusquamperfekt, Futur I, and Futur II, as well as Indikativ, Konjunktiv I/II, and Imperativ forms. It supports modal verbs, forms with auxiliary verbs, and the main declension patterns of nouns and adjectives.
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