Present
| I | convulse |
| You | convulse |
| She | convulses |
| We | convulse |
| They | convulse |
Past
| I | convulsed |
| You | convulsed |
| She | convulsed |
| We | convulsed |
| They | convulsed |
Perfect
| I | have | convulsed |
| You | have | convulsed |
| She | has | convulsed |
| We | have | convulsed |
| They | have | convulsed |
Future
| I | will | convulse |
| You | will | convulse |
| She | will | convulse |
| We | will | convulse |
| They | will | convulse |
Past Perfect
| I | had | convulsed |
| You | had | convulsed |
| She | had | convulsed |
| We | had | convulsed |
| They | had | convulsed |
Future Perfect
| I | will | have | convulsed |
| You | will | have | convulsed |
| She | will | have | convulsed |
| We | will | have | convulsed |
| They | will | have | convulsed |
Present - Conditional
| I | would | convulse |
| You | would | convulse |
| She | would | convulse |
| We | would | convulse |
| They | would | convulse |
Perfect - Conditional
| I | would | have | convulsed |
| You | would | have | convulsed |
| She | would | have | convulsed |
| We | would | have | convulsed |
| They | would | have | convulsed |