I must aim you must aim she must aim we must aim you must aim they must aim
V-ing form
I must be aiming you must be aiming she must be aiming we must be aiming you must be aiming they must be aiming
Perfect
I must have aimed you must have aimed she must have aimed we must have aimed you must have aimed they must have aimed
V-ing perfect
I must have been aiming you must have been aiming she must have been aiming we must have been aiming you must have been aiming they must have been aiming
Negation
Simple form
I mustn't aim you mustn't aim she mustn't aim we mustn't aim you mustn't aim they mustn't aim
V-ing form
I mustn't be aiming you mustn't be aiming she mustn't be aiming we mustn't be aiming you mustn't be aiming they mustn't be aiming
Perfect
I mustn't have aimed you mustn't have aimed she mustn't have aimed we mustn't have aimed you mustn't have aimed they mustn't have aimed
V-ing perfect
I mustn't have been aiming you mustn't have been aiming she mustn't have been aiming we mustn't have been aiming you mustn't have been aiming they mustn't have been aiming
Interrogative form
Simple form
must I aim? must you aim? must she aim? must we aim? must you aim? must they aim?
V-ing form
must I be aiming? must you be aiming? must she be aiming? must we be aiming? must you be aiming? must they be aiming?
Perfect
must I have aimed? must you have aimed? must she have aimed? must we have aimed? must you have aimed? must they have aimed?
V-ing perfect
must I have been aiming? must you have been aiming? must she have been aiming? must we have been aiming? must you have been aiming? must they have been aiming?
Interro-negative form
Simple form
mustn't I aim? mustn't you aim? mustn't she aim? mustn't we aim? mustn't you aim? mustn't they aim?
V-ing form
mustn't I be aiming? mustn't you be aiming? mustn't she be aiming? mustn't we be aiming? mustn't you be aiming? mustn't they be aiming?
Perfect
mustn't I have aimed? mustn't you have aimed? mustn't she have aimed? mustn't we have aimed? mustn't you have aimed? mustn't they have aimed?
V-ing perfect
mustn't I have been aiming? mustn't you have been aiming? mustn't she have been aiming? mustn't we have been aiming? mustn't you have been aiming? mustn't they have been aiming?