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