| Präsens (Present) "undergo" | I | undergo | |
| Präsens Verlaufsform (Present continuous) "undergo" | I | am undergoing | |
| Präteritum (Simple past) "undergo" | I | underwent | |
| Perfekt Verlaufsform (Past Continuous) "undergo" | I | was undergoing | |
| Present Perfect (Präsens) "undergo" | I | have undergone | |
| Present Continuous (Futur) "undergo" | I | have been undergoing | |
| Plusquamperfekt (Past perfect) "undergo" | I | had undergone | |
| Plusquamperfekt Verlaufsform (Past perfect continuous) "undergo" | I | had been undergoing | |
| Futur I (Future) "undergo" | I | will undergo | |
| Futur I Verlaufsform (Future continuous) "undergo" | I | will be undergoing | |
| Futur II (Future perfect) "undergo" | I | will have undergone | |
| Futur II Verlaufsform (Future perfect continuous) "undergo" | I | will have been undergoing |