| 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 | 
