| Present "pen" | I | pen | |
| Present Continuous "pen" | I | am penning | |
| Simple past "pen" | I | penned | |
| Past Continuous "pen" | I | was penning | |
| Present perfect "pen" | I | have penned | |
| Present perfect continuous "pen" | I | have been penning | |
| Past perfect "pen" | I | had penned | |
| Past perfect continuous "pen" | I | had been penning | |
| Future "pen" | I | will pen | |
| Future continuous "pen" | I | will be penning | |
| Future perfect "pen" | I | will have penned | |
| Future perfect continuous "pen" | I | will have been penning |