Model: singen
Auxiliary: sein
Other forms: springen/nicht springen
Irregular conjugation for the verbs with the ending -ingen: there is a vowel change in the stem of Present tense ("ich singe") and the stem of Preterite ("ich sang") and the stem of Past Participle ("gesunden").
Präsens
Präteritum
Perfekt
Plusquamperfekt
Futur II
Futur I