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