| Present "fret" | I | fret | |
| Present Continuous "fret" | I | am fretting | |
| Simple past "fret" | I | fretted | |
| Past Continuous "fret" | I | was fretting | |
| Present perfect "fret" | I | have fretted | |
| Present perfect continuous "fret" | I | have been fretting | |
| Past perfect "fret" | I | had fretted | |
| Past perfect continuous "fret" | I | had been fretting | |
| Future "fret" | I | will fret | |
| Future continuous "fret" | I | will be fretting | |
| Future perfect "fret" | I | will have fretted | |
| Future perfect continuous "fret" | I | will have been fretting |