Model: halten
Auxiliary: haben
Other forms: aufhalten/nicht aufhalten
Irregular conjugation for the verb "halten" and its compounds: stem vowel mutation (umlaut) in singular form of the second and third person in Present tense ("du hältst"). There is a vowel change in the stem of Present tense ("ich halte"), the stem of Preterite ("ich hielt") and the stem of Part Participle ("gehalten").
Präsens
Präteritum
Perfekt
Plusquamperfekt
Futur II
Futur I