| Simple | Progressive | Perfect | Progressive |
| Present |
| I convulse |
| you convulse |
| he/she/it convulses |
| we convulse |
| you all convulse |
| they convulse |
|
| I am convulsing |
| you are convulsing |
| he/she/it is convulsing |
| we are convulsing |
| you all are convulsing |
| they are convulsing |
|
| I have convulsed |
| you have convulsed |
| he/she/it has convulsed |
| we have convulsed |
| you all have convulsed |
| they have convulsed |
|
| I have been convulsing |
| you have been convulsing |
| he/she/it has been convulsing |
| we have been convulsing |
| you all have been convulsing |
| they have been convulsing |
|
| Past |
| I convulsed |
| you convulsed |
| he/she/it convulsed |
| we convulsed |
| you all convulsed |
| they convulsed |
|
| I was convulsing |
| you were convulsing |
| he/she/it was convulsing |
| we were convulsing |
| you all were convulsing |
| they were convulsing |
|
| I had convulsed |
| you had convulsed |
| he/she/it had convulsed |
| we had convulsed |
| you all had convulsed |
| they had convulsed |
|
| I had been convulsing |
| you had been convulsing |
| he/she/it had been convulsing |
| we had been convulsing |
| you all had been convulsing |
| they had been convulsing |
|
| Future |
| I will convulse |
| you will convulse |
| he/she/it will convulse |
| we will convulse |
| you all will convulse |
| they will convulse |
|
| I will be convulsing |
| you will be convulsing |
| he/she/it will be convulsing |
| we are convulsing |
| you all will be convulsing |
| they will be convulsing |
|
| I will have convulsed |
| you will have convulsed |
| he/she/it will have convulsed |
| we will have convulsed |
| you all will have convulsed |
| they will have convulsed |
|
| I will have been convulsing |
| you will have been convulsing |
| he/she/it will have been convulsing |
| we will have been convulsing |
| you all will have been convulsing |
| they will have been convulsing |
|
