Conjugation and declension of "stapeln" in German
Conjugation of the verb stapeln, weak,
perfect with haben 
stack, pile up
Indikativ
Präsens
Präteritum
Perfekt
Plusquamperfekt
Futur I
ich werde stapelndu wirst stapeln
er/sie/es wird stapeln
wir werden stapeln
ihr werdet stapeln
sie werden stapeln
Futur II
Konjunktiv I
Präsens
Perfekt
Futur I
ich werde stapelndu werdest stapeln
er/sie/es werde stapeln
wir werden stapeln
ihr werdet stapeln
sie werden stapeln
Futur II
Konjunktiv II
Präteritum
Plusquamperfekt
Futur I
ich würde stapelndu würdest stapeln
er/sie/es würde stapeln
wir würden stapeln
ihr würdet stapeln
sie würden stapeln
Futur II
Imperativ
Infinite Verbformen
Infinitiv
| Infinitiv I Aktiv | stapeln |
| Infinitiv II Aktiv | |
| Infinitiv I Passiv | |
| Infinitiv II Passiv |
Partizipien
| Partizip I | |
| Partizip II |
Singular and plural for Stapel,
m, strong declension 
stack, pile, large amount
Popular German Verbs
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Conjugation of German verbs
German is spoken as a first or regularly used second language by around 130 million people in Germany, Austria, Switzerland, Luxembourg, Belgium, Liechtenstein, and South Tyrol (Italy). For a short trip to these countries, it is enough to learn a few phrases from a phrase book. But if you plan to stay for contract work or long-term education, you are to study vocabulary and grammar.
Verbs are very important in German. They change in tenses, numbers and persons, they have moods and modalities, and this is the problem of mastering the language of Goethe and Schiller. Learning German grammar requires discipline and regularity of classes, suitable formats and a positive attitude.
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German Nouns and Adjectives
German nouns are declined by cases (Nominativ, Genetiv, Dativ, Akkusativ) and numbers, which often involves changing endings. German adjectives always agree with the nouns to which they refer, they are declined in cases, genders and numbers. It can be complex for language learners to identify and memorize the type of declension: strong declension (Tisch, Wasser, Buch, Gebäude, Haus), weak (Student, Mensch, Herr, Affe, Agent), feminine (Sprache, Schwester, Arbeit, Milch, Politik) or mixed one (Glaube, Doktor, Herz).
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