
Verbe régulier : muss -  mussed - mussed
Traduction française : friper - salir must aux modal devoir 
Forme simple | Forme en V-ing | 
| I could muss you could muss he could muss we could muss you could muss they could muss  | I could be mussing you could be mussing he could be mussing we could be mussing you could be mussing they could be mussing  | 
Perfect | Perfect en V-ing | 
| I could have mussed you could have mussed he could have mussed we could have mussed you could have mussed they could have mussed  | I could have been mussing you could have been mussing he could have been mussing we could have been mussing you could have been mussing they could have been mussing  | 
Forme simple | Forme en V-ing | 
| I couldn't muss you couldn't muss he couldn't muss we couldn't muss you couldn't muss they couldn't muss  | I couldn't be mussing you couldn't be mussing he couldn't be mussing we couldn't be mussing you couldn't be mussing they couldn't be mussing  | 
Perfect | Perfect en V-ing | 
| I couldn't have mussed you couldn't have mussed he couldn't have mussed we couldn't have mussed you couldn't have mussed they couldn't have mussed  | I couldn't have been mussing you couldn't have been mussing he couldn't have been mussing we couldn't have been mussing you couldn't have been mussing they couldn't have been mussing  | 
Forme simple | Forme en V-ing | 
| could I muss? could you muss? could he muss? could we muss? could you muss? could they muss?  | could I be mussing? could you be mussing? could he be mussing? could we be mussing? could you be mussing? could they be mussing?  | 
Perfect | Perfect en V-ing | 
| could I have mussed? could you have mussed? could he have mussed? could we have mussed? could you have mussed? could they have mussed?  | could I have been mussing? could you have been mussing? could he have been mussing? could we have been mussing? could you have been mussing? could they have been mussing?  | 
Forme simple | Forme en V-ing | 
| couldn't I muss? couldn't you muss? couldn't he muss? couldn't we muss? couldn't you muss? couldn't they muss?  | couldn't I be mussing? couldn't you be mussing? couldn't he be mussing? couldn't we be mussing? couldn't you be mussing? couldn't they be mussing?  | 
Perfect | Perfect en V-ing | 
| couldn't I have mussed? couldn't you have mussed? couldn't he have mussed? couldn't we have mussed? couldn't you have mussed? couldn't they have mussed?  | couldn't I have been mussing? couldn't you have been mussing? couldn't he have been mussing? couldn't we have been mussing? couldn't you have been mussing? couldn't they have been mussing?  |