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