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