should headquarter
Regular verb: headquarter - headquartered- headquartered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should headquarter
you should headquarter
he should headquarter
we should headquarter
you should headquarter
they should headquarter 	I should be headquartering
you should be headquartering
he should be headquartering
we should be headquartering
you should be headquartering
they should be headquartering	I should have headquartered
you should have headquartered
he should have headquartered
we should have headquartered
you should have headquartered
they should have headquartered	I should have been headquartering
you should have been headquartering
he should have been headquartering
we should have been headquartering
you should have been headquartering
they should have been headquartering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not headquarter
you should not headquarter
he should not headquarter
we should not headquarter
you should not headquarter
they should not headquarter 	I should not be headquartering
you should not be headquartering
he should not be headquartering
we should not be headquartering
you should not be headquartering
they should not be headquartering	I should not have headquartered
you should not have headquartered
he should not have headquartered
we should not have headquartered
you should not have headquartered
they should not have headquartered	I should not have been headquartering
you should not have been headquartering
he should not have been headquartering
we should not have been headquartering
you should not have been headquartering
they should not have been headquartering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I headquarter?
should you headquarter?
should he headquarter?
should we headquarter?
should you headquarter?
should they headquarter? 	should I be headquartering?
should you be headquartering?
should he be headquartering?
should we be headquartering?
should you be headquartering?
should they be headquartering? 	should I have headquartered?
should you have headquartered?
should he have headquartered?
should we have headquartered?
should you have headquartered?
should they have headquartered? 	should I have been headquartering?
should you have been headquartering?
should he have been headquartering?
should we have been headquartering?
should you have been headquartering?
should they have been headquartering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not headquarter?
should you not headquarter?
should he not headquarter?
should we not headquarter?
should you not headquarter?
should they not headquarter? 	should I not be headquartering?
should you not be headquartering?
should he not be headquartering?
should we not be headquartering?
should you not be headquartering?
should they not be headquartering? 	should I not have headquartered?
should you not have headquartered?
should he not have headquartered?
should we not have headquartered?
should you not have headquartered?
should they not have headquartered? 	should I not have been headquartering?
should you not have been headquartering?
should he not have been headquartering?
should we not have been headquartering?
should you not have been headquartering?
should they not have been headquartering?