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