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