
Verbe régulier : frock - frocked - frocked
Forme simple | Forme en V-ing | 
| I could frock you could frock he could frock we could frock you could frock they could frock  | I could be frocking you could be frocking he could be frocking we could be frocking you could be frocking they could be frocking  | 
Perfect | Perfect en V-ing | 
| I could have frocked you could have frocked he could have frocked we could have frocked you could have frocked they could have frocked  | I could have been frocking you could have been frocking he could have been frocking we could have been frocking you could have been frocking they could have been frocking  | 
Forme simple | Forme en V-ing | 
| I couldn't frock you couldn't frock he couldn't frock we couldn't frock you couldn't frock they couldn't frock  | I couldn't be frocking you couldn't be frocking he couldn't be frocking we couldn't be frocking you couldn't be frocking they couldn't be frocking  | 
Perfect | Perfect en V-ing | 
| I couldn't have frocked you couldn't have frocked he couldn't have frocked we couldn't have frocked you couldn't have frocked they couldn't have frocked  | I couldn't have been frocking you couldn't have been frocking he couldn't have been frocking we couldn't have been frocking you couldn't have been frocking they couldn't have been frocking  | 
Forme simple | Forme en V-ing | 
| could I frock? could you frock? could he frock? could we frock? could you frock? could they frock?  | could I be frocking? could you be frocking? could he be frocking? could we be frocking? could you be frocking? could they be frocking?  | 
Perfect | Perfect en V-ing | 
| could I have frocked? could you have frocked? could he have frocked? could we have frocked? could you have frocked? could they have frocked?  | could I have been frocking? could you have been frocking? could he have been frocking? could we have been frocking? could you have been frocking? could they have been frocking?  | 
Forme simple | Forme en V-ing | 
| couldn't I frock? couldn't you frock? couldn't he frock? couldn't we frock? couldn't you frock? couldn't they frock?  | couldn't I be frocking? couldn't you be frocking? couldn't he be frocking? couldn't we be frocking? couldn't you be frocking? couldn't they be frocking?  | 
Perfect | Perfect en V-ing | 
| couldn't I have frocked? couldn't you have frocked? couldn't he have frocked? couldn't we have frocked? couldn't you have frocked? couldn't they have frocked?  | couldn't I have been frocking? couldn't you have been frocking? couldn't he have been frocking? couldn't we have been frocking? couldn't you have been frocking? couldn't they have been frocking?  |