| I | fret |
|---|---|
| you | fret |
| he/she/it | frets |
| we | fret |
| you | fret |
| they | fret |
| I | fretted |
|---|---|
| you | fretted |
| he/she/it | fretted |
| we | fretted |
| you | fretted |
| they | fretted |
| I | have | fretted |
|---|---|---|
| you | have | fretted |
| he/she/it | has | fretted |
| we | have | fretted |
| you | have | fretted |
| they | have | fretted |
| I | had | fretted |
|---|---|---|
| you | had | fretted |
| he/she/it | had | fretted |
| we | had | fretted |
| you | had | fretted |
| they | had | fretted |