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