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