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