| Présent (Present) "constrain" | I | constrain | |
| Présent continu (Present Continuous) "constrain" | I | am constraining | |
| Passé (Simple past) "constrain" | I | constrained | |
| Passé antérieur (Past Continuous) "constrain" | I | was constraining | |
| Présent parfait (Present perfect) "constrain" | I | have constrained | |
| Continu Présent (Present perfect continuous) "constrain" | I | have been constraining | |
| Imparfait (Past perfect) "constrain" | I | had constrained | |
| Plus-que-parfait (Past perfect continuous) "constrain" | I | had been constraining | |
| Futur simple (Future) "constrain" | I | will constrain | |
| Futur (Future continuous) "constrain" | I | will be constraining | |
| Futur antérieur (Future perfect) "constrain" | I | will have constrained | |
| Futur antérieur continu (Future perfect continuous) "constrain" | I | will have been constraining |