English verb conjugation
COULD HEADQUARTER

Regular verb: headquarter - headquartered - headquartered

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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