English verb conjugation
CAN COUNTERATTACK

Regular verb: counterattack - counterattacked - counterattacked

Affirmation

Simple form	V-ing form
I can counterattack you can counterattack he can counterattack we can counterattack you can counterattack they can counterattack	I can be counterattacking you can be counterattacking he can be counterattacking we can be counterattacking you can be counterattacking they can be counterattacking
Perfect	V-ing perfect
I can have counterattacked you can have counterattacked he can have counterattacked we can have counterattacked you can have counterattacked they can have counterattacked	I can have been counterattacking you can have been counterattacking he can have been counterattacking we can have been counterattacking you can have been counterattacking they can have been counterattacking

Negation

Simple form	V-ing form
I cannot counterattack you cannot counterattack he cannot counterattack we cannot counterattack you cannot counterattack they cannot counterattack	I cannot be counterattacking you cannot be counterattacking he cannot be counterattacking we cannot be counterattacking you cannot be counterattacking they cannot be counterattacking
Perfect	V-ing perfect
I cannot have counterattacked you cannot have counterattacked he cannot have counterattacked we cannot have counterattacked you cannot have counterattacked they cannot have counterattacked	I cannot have been counterattacking you cannot have been counterattacking he cannot have been counterattacking we cannot have been counterattacking you cannot have been counterattacking they cannot have been counterattacking

Interrogative form

Simple form	V-ing form
can I counterattack? can you counterattack? can he counterattack? can we counterattack? can you counterattack? can they counterattack?	can I be counterattacking? can you be counterattacking? can he be counterattacking? can we be counterattacking? can you be counterattacking? can they be counterattacking?
Perfect	V-ing perfect
can I have counterattacked? can you have counterattacked? can he have counterattacked? can we have counterattacked? can you have counterattacked? can they have counterattacked?	can I have been counterattacking? can you have been counterattacking? can he have been counterattacking? can we have been counterattacking? can you have been counterattacking? can they have been counterattacking?

Interro-negative form

Simple form	V-ing form
can I not counterattack? can you not counterattack? can he not counterattack? can we not counterattack? can you not counterattack? can they not counterattack?	can I not be counterattacking? can you not be counterattacking? can he not be counterattacking? can we not be counterattacking? can you not be counterattacking? can they not be counterattacking?
Perfect	V-ing perfect
can I not have counterattacked? can you not have counterattacked? can he not have counterattacked? can we not have counterattacked? can you not have counterattacked? can they not have counterattacked?	can I not have been counterattacking? can you not have been counterattacking? can he not have been counterattacking? can we not have been counterattacking? can you not have been counterattacking? can they not have been counterattacking?