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