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