
Verbe régulier : haven - havened - havened
Forme simple | Forme en V-ing | 
| I must haven you must haven she must haven we must haven you must haven they must haven  | I must be havening you must be havening she must be havening we must be havening you must be havening they must be havening  | 
Perfect | Perfect en V-ing | 
| I must have havened you must have havened she must have havened we must have havened you must have havened they must have havened  | I must have been havening you must have been havening she must have been havening we must have been havening you must have been havening they must have been havening  | 
Forme simple | Forme en V-ing | 
| I mustn't haven you mustn't haven she mustn't haven we mustn't haven you mustn't haven they mustn't haven  | I mustn't be havening you mustn't be havening she mustn't be havening we mustn't be havening you mustn't be havening they mustn't be havening  | 
Perfect | Perfect en V-ing | 
| I mustn't have havened you mustn't have havened she mustn't have havened we mustn't have havened you mustn't have havened they mustn't have havened  | I mustn't have been havening you mustn't have been havening she mustn't have been havening we mustn't have been havening you mustn't have been havening they mustn't have been havening  | 
Forme simple | Forme en V-ing | 
| must I haven? must you haven? must she haven? must we haven? must you haven? must they haven?  | must I be havening? must you be havening? must she be havening? must we be havening? must you be havening? must they be havening?  | 
Perfect | Perfect en V-ing | 
| must I have havened? must you have havened? must she have havened? must we have havened? must you have havened? must they have havened?  | must I have been havening? must you have been havening? must she have been havening? must we have been havening? must you have been havening? must they have been havening?  | 
Forme simple | Forme en V-ing | 
| mustn't I haven? mustn't you haven? mustn't she haven? mustn't we haven? mustn't you haven? mustn't they haven?  | mustn't I be havening? mustn't you be havening? mustn't she be havening? mustn't we be havening? mustn't you be havening? mustn't they be havening?  | 
Perfect | Perfect en V-ing | 
| mustn't I have havened? mustn't you have havened? mustn't she have havened? mustn't we have havened? mustn't you have havened? mustn't they have havened?  | mustn't I have been havening? mustn't you have been havening? mustn't she have been havening? mustn't we have been havening? mustn't you have been havening? mustn't they have been havening?  |