must counterattack
Verbo regular: counterattack - counterattacked- counterattacked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	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	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	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? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	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?