| Presente (Present) "attest" | I | attest | |
| Presente continuo (Present Continuous) "attest" | I | am attesting | |
| Pasado simple (Simple past) "attest" | I | attested | |
| Pasado continuo (Past Continuous) "attest" | I | was attesting | |
| Presente perfecto (Present perfect) "attest" | I | have attested | |
| Presente perfecto continuo (Present perfect continuous) "attest" | I | have been attesting | |
| Pasado perfecto (Past perfect) "attest" | I | had attested | |
| Pasado perfecto continuo (Past perfect continuous) "attest" | I | had been attesting | |
| Futuro (Future) "attest" | I | will attest | |
| Futuro continuo (Future continuous) "attest" | I | will be attesting | |
| Futuro perfecto (Future perfect) "attest" | I | will have attested | |
| Futuro perfecto continuo (Future perfect continuous) "attest" | I | will have been attesting |