Present "undergo" | I | undergo | |
Present Continuous "undergo" | I | am undergoing | |
Simple past "undergo" | I | underwent | |
Past Continuous "undergo" | I | was undergoing | |
Present perfect "undergo" | I | have undergone | |
Present perfect continuous "undergo" | I | have been undergoing | |
Past perfect "undergo" | I | had undergone | |
Past perfect continuous "undergo" | I | had been undergoing | |
Future "undergo" | I | will undergo | |
Future continuous "undergo" | I | will be undergoing | |
Future perfect "undergo" | I | will have undergone | |
Future perfect continuous "undergo" | I | will have been undergoing |