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