Present
| I | undergo |
| You | undergo |
| She | undergoes |
| We | undergo |
| They | undergo |
Past
| I | underwent |
| You | underwent |
| She | underwent |
| We | underwent |
| They | underwent |
Perfect
| I | have | undergone |
| You | have | undergone |
| She | has | undergone |
| We | have | undergone |
| They | have | undergone |
Future
| I | will | undergo |
| You | will | undergo |
| She | will | undergo |
| We | will | undergo |
| They | will | undergo |
Past Perfect
| I | had | undergone |
| You | had | undergone |
| She | had | undergone |
| We | had | undergone |
| They | had | undergone |
Future Perfect
| I | will | have | undergone |
| You | will | have | undergone |
| She | will | have | undergone |
| We | will | have | undergone |
| They | will | have | undergone |
Present - Conditional
| I | would | undergo |
| You | would | undergo |
| She | would | undergo |
| We | would | undergo |
| They | would | undergo |
Perfect - Conditional
| I | would | have | undergone |
| You | would | have | undergone |
| She | would | have | undergone |
| We | would | have | undergone |
| They | would | have | undergone |