I must annul you must annul he must annul we must annul you must annul they must annul
V-ing form
I must be annulling you must be annulling he must be annulling we must be annulling you must be annulling they must be annulling
Perfect
I must have annulled you must have annulled he must have annulled we must have annulled you must have annulled they must have annulled
V-ing perfect
I must have been annulling you must have been annulling he must have been annulling we must have been annulling you must have been annulling they must have been annulling
Negation
Simple form
I mustn't annul you mustn't annul he mustn't annul we mustn't annul you mustn't annul they mustn't annul
V-ing form
I mustn't be annulling you mustn't be annulling he mustn't be annulling we mustn't be annulling you mustn't be annulling they mustn't be annulling
Perfect
I mustn't have annulled you mustn't have annulled he mustn't have annulled we mustn't have annulled you mustn't have annulled they mustn't have annulled
V-ing perfect
I mustn't have been annulling you mustn't have been annulling he mustn't have been annulling we mustn't have been annulling you mustn't have been annulling they mustn't have been annulling
Interrogative form
Simple form
must I annul? must you annul? must he annul? must we annul? must you annul? must they annul?
V-ing form
must I be annulling? must you be annulling? must he be annulling? must we be annulling? must you be annulling? must they be annulling?
Perfect
must I have annulled? must you have annulled? must he have annulled? must we have annulled? must you have annulled? must they have annulled?
V-ing perfect
must I have been annulling? must you have been annulling? must he have been annulling? must we have been annulling? must you have been annulling? must they have been annulling?
Interro-negative form
Simple form
mustn't I annul? mustn't you annul? mustn't he annul? mustn't we annul? mustn't you annul? mustn't they annul?
V-ing form
mustn't I be annulling? mustn't you be annulling? mustn't he be annulling? mustn't we be annulling? mustn't you be annulling? mustn't they be annulling?
Perfect
mustn't I have annulled? mustn't you have annulled? mustn't he have annulled? mustn't we have annulled? mustn't you have annulled? mustn't they have annulled?
V-ing perfect
mustn't I have been annulling? mustn't you have been annulling? mustn't he have been annulling? mustn't we have been annulling? mustn't you have been annulling? mustn't they have been annulling?