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