English verb conjugation
MUST COUNTERATTACK

Regular verb: counterattack - counterattacked - counterattacked

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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