can patrol
Regular verb: patrol - patrolled- patrolled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can patrol
you can patrol
he can patrol
we can patrol
you can patrol
they can patrol 	I can be patrolling
you can be patrolling
he can be patrolling
we can be patrolling
you can be patrolling
they can be patrolling	I can have patrolled
you can have patrolled
he can have patrolled
we can have patrolled
you can have patrolled
they can have patrolled	I can have been patrolling
you can have been patrolling
he can have been patrolling
we can have been patrolling
you can have been patrolling
they can have been patrolling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't patrol
you can't patrol
he can't patrol
we can't patrol
you can't patrol
they can't patrol 	I can't be patrolling
you can't be patrolling
he can't be patrolling
we can't be patrolling
you can't be patrolling
they can't be patrolling	I can't have patrolled
you can't have patrolled
he can't have patrolled
we can't have patrolled
you can't have patrolled
they can't have patrolled	I can't have been patrolling
you can't have been patrolling
he can't have been patrolling
we can't have been patrolling
you can't have been patrolling
they can't have been patrolling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I patrol?
can you patrol?
can he patrol?
can we patrol?
can you patrol?
can they patrol? 	can I be patrolling?
can you be patrolling?
can he be patrolling?
can we be patrolling?
can you be patrolling?
can they be patrolling? 	can I have patrolled?
can you have patrolled?
can he have patrolled?
can we have patrolled?
can you have patrolled?
can they have patrolled? 	can I have been patrolling?
can you have been patrolling?
can he have been patrolling?
can we have been patrolling?
can you have been patrolling?
can they have been patrolling? 	

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