| I | constrain |
| you | constrain |
| he/she/it | constrains |
| we | constrain |
| you | constrain |
| they | constrain |
| I | have constrained |
| you | have constrained |
| he/she/it | has constrained |
| we | have constrained |
| you | have constrained |
| they | have constrained |
| I | constrained |
| you | constrained |
| he/she/it | constrained |
| we | constrained |
| you | constrained |
| they | constrained |
| I | had constrained |
| you | had constrained |
| he/she/it | had constrained |
| we | had constrained |
| you | had constrained |
| they | had constrained |
| I | will constrain |
| you | will constrain |
| he/she/it | will constrain |
| we | will constrain |
| you | will constrain |
| they | will constrain |
| I | will have constrained |
| you | will have constrained |
| he/she/it | will have constrained |
| we | will have constrained |
| you | will have constrained |
| they | will have constrained |
| I | am constraining |
| you | are constraining |
| he/she/it | is constraining |
| we | are constraining |
| you | are constraining |
| they | are constraining |
| I | have been constraining |
| you | have been constraining |
| he/she/it | has been constraining |
| we | have been constraining |
| you | have been constraining |
| they | have been constraining |
| I | was constraining |
| you | were constraining |
| he/she/it | was constraining |
| we | were constraining |
| you | were constraining |
| they | were constraining |
| I | had been constraining |
| you | had been constraining |
| he/she/it | had been constraining |
| we | had been constraining |
| you | had been constraining |
| they | had been constraining |
| I | will be constraining |
| you | will be constraining |
| he/she/it | will be constraining |
| we | will be constraining |
| you | will be constraining |
| they | will be constraining |
| I | will have been constraining |
| you | will have been constraining |
| he/she/it | will have been constraining |
| we | will have been constraining |
| you | will have been constraining |
| they | will have been constraining |
| I | would constrain |
| you | would constrain |
| he/she/it | would constrain |
| we | would constrain |
| you | would constrain |
| they | would constrain |
| I | would have constrained |
| you | would have constrained |
| he/she/it | would have constrained |
| we | would have constrained |
| you | would have constrained |
| they | would have constrained |
| I | would be constraining |
| you | would be constraining |
| he/she/it | would be constraining |
| we | would be constraining |
| you | would be constraining |
| they | would be constraining |
| I | would have been constraining |
| you | would have been constraining |
| he/she/it | would have been constraining |
| we | would have been constraining |
| you | would have been constraining |
| they | would have been constraining |
| You | constrain |
| we | Let's constrain |
| You | constrain |