must counterassault
Regular verb: counterassault - counterassaulted- counterassaulted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must counterassault
you must counterassault
he must counterassault
we must counterassault
you must counterassault
they must counterassault 	I must be counterassaulting
you must be counterassaulting
he must be counterassaulting
we must be counterassaulting
you must be counterassaulting
they must be counterassaulting	I must have counterassaulted
you must have counterassaulted
he must have counterassaulted
we must have counterassaulted
you must have counterassaulted
they must have counterassaulted	I must have been counterassaulting
you must have been counterassaulting
he must have been counterassaulting
we must have been counterassaulting
you must have been counterassaulting
they must have been counterassaulting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not counterassault
you must not counterassault
he must not counterassault
we must not counterassault
you must not counterassault
they must not counterassault 	I must not be counterassaulting
you must not be counterassaulting
he must not be counterassaulting
we must not be counterassaulting
you must not be counterassaulting
they must not be counterassaulting	I must not have counterassaulted
you must not have counterassaulted
he must not have counterassaulted
we must not have counterassaulted
you must not have counterassaulted
they must not have counterassaulted	I must not have been counterassaulting
you must not have been counterassaulting
he must not have been counterassaulting
we must not have been counterassaulting
you must not have been counterassaulting
they must not have been counterassaulting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I counterassault?
must you counterassault?
must he counterassault?
must we counterassault?
must you counterassault?
must they counterassault? 	must I be counterassaulting?
must you be counterassaulting?
must he be counterassaulting?
must we be counterassaulting?
must you be counterassaulting?
must they be counterassaulting? 	must I have counterassaulted?
must you have counterassaulted?
must he have counterassaulted?
must we have counterassaulted?
must you have counterassaulted?
must they have counterassaulted? 	must I have been counterassaulting?
must you have been counterassaulting?
must he have been counterassaulting?
must we have been counterassaulting?
must you have been counterassaulting?
must they have been counterassaulting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not counterassault?
must you not counterassault?
must he not counterassault?
must we not counterassault?
must you not counterassault?
must they not counterassault? 	must I not be counterassaulting?
must you not be counterassaulting?
must he not be counterassaulting?
must we not be counterassaulting?
must you not be counterassaulting?
must they not be counterassaulting? 	must I not have counterassaulted?
must you not have counterassaulted?
must he not have counterassaulted?
must we not have counterassaulted?
must you not have counterassaulted?
must they not have counterassaulted? 	must I not have been counterassaulting?
must you not have been counterassaulting?
must he not have been counterassaulting?
must we not have been counterassaulting?
must you not have been counterassaulting?
must they not have been counterassaulting?