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