may counteract
Regular verb: counteract - counteracted- counteracted

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

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

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

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