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