Present
| I | preexist |
| You | preexist |
| She | preexists |
| We | preexist |
| They | preexist |
Past
| I | preexisted |
| You | preexisted |
| She | preexisted |
| We | preexisted |
| They | preexisted |
Perfect
| I | have | preexisted |
| You | have | preexisted |
| She | has | preexisted |
| We | have | preexisted |
| They | have | preexisted |
Future
| I | will | preexist |
| You | will | preexist |
| She | will | preexist |
| We | will | preexist |
| They | will | preexist |
Past Perfect
| I | had | preexisted |
| You | had | preexisted |
| She | had | preexisted |
| We | had | preexisted |
| They | had | preexisted |
Future Perfect
| I | will | have | preexisted |
| You | will | have | preexisted |
| She | will | have | preexisted |
| We | will | have | preexisted |
| They | will | have | preexisted |
Present - Conditional
| I | would | preexist |
| You | would | preexist |
| She | would | preexist |
| We | would | preexist |
| They | would | preexist |
Perfect - Conditional
| I | would | have | preexisted |
| You | would | have | preexisted |
| She | would | have | preexisted |
| We | would | have | preexisted |
| They | would | have | preexisted |