can counteract
Regular verb: counteract - counteracted- counteracted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can counteract
you can counteract
he can counteract
we can counteract
you can counteract
they can counteract 	I can be counteracting
you can be counteracting
he can be counteracting
we can be counteracting
you can be counteracting
they can be counteracting	I can have counteracted
you can have counteracted
he can have counteracted
we can have counteracted
you can have counteracted
they can have counteracted	I can have been counteracting
you can have been counteracting
he can have been counteracting
we can have been counteracting
you can have been counteracting
they can have been counteracting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't counteract
you can't counteract
he can't counteract
we can't counteract
you can't counteract
they can't counteract 	I can't be counteracting
you can't be counteracting
he can't be counteracting
we can't be counteracting
you can't be counteracting
they can't be counteracting	I can't have counteracted
you can't have counteracted
he can't have counteracted
we can't have counteracted
you can't have counteracted
they can't have counteracted	I can't have been counteracting
you can't have been counteracting
he can't have been counteracting
we can't have been counteracting
you can't have been counteracting
they can't have been counteracting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I counteract?
can you counteract?
can he counteract?
can we counteract?
can you counteract?
can they counteract? 	can I be counteracting?
can you be counteracting?
can he be counteracting?
can we be counteracting?
can you be counteracting?
can they be counteracting? 	can I have counteracted?
can you have counteracted?
can he have counteracted?
can we have counteracted?
can you have counteracted?
can they have counteracted? 	can I have been counteracting?
can you have been counteracting?
can he have been counteracting?
can we have been counteracting?
can you have been counteracting?
can they have been counteracting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I counteract?
can't you counteract?
can't he counteract?
can't we counteract?
can't you counteract?
can't they counteract? 	can't I be counteracting?
can't you be counteracting?
can't he be counteracting?
can't we be counteracting?
can't you be counteracting?
can't they be counteracting? 	can't I have counteracted?
can't you have counteracted?
can't he have counteracted?
can't we have counteracted?
can't you have counteracted?
can't they have counteracted? 	can't I have been counteracting?
can't you have been counteracting?
can't he have been counteracting?
can't we have been counteracting?
can't you have been counteracting?
can't they have been counteracting?