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