English verb conjugation
COULD HEADQUARTER

Regular verb: headquarter - headquartered - headquartered

Affirmation

Simple form	V-ing form
I could headquarter you could headquarter she could headquarter we could headquarter you could headquarter they could headquarter	I could be headquartering you could be headquartering she 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 she 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 she 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 couldn't headquarter you couldn't headquarter she couldn't headquarter we couldn't headquarter you couldn't headquarter they couldn't headquarter	I couldn't be headquartering you couldn't be headquartering she couldn't be headquartering we couldn't be headquartering you couldn't be headquartering they couldn't be headquartering
Perfect	V-ing perfect
I couldn't have headquartered you couldn't have headquartered she couldn't have headquartered we couldn't have headquartered you couldn't have headquartered they couldn't have headquartered	I couldn't have been headquartering you couldn't have been headquartering she couldn't have been headquartering we couldn't have been headquartering you couldn't have been headquartering they couldn't have been headquartering

Interrogative form

Simple form	V-ing form
could I headquarter? could you headquarter? could she headquarter? could we headquarter? could you headquarter? could they headquarter?	could I be headquartering? could you be headquartering? could she 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 she 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 she 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
couldn't I headquarter? couldn't you headquarter? couldn't she headquarter? couldn't we headquarter? couldn't you headquarter? couldn't they headquarter?	couldn't I be headquartering? couldn't you be headquartering? couldn't she be headquartering? couldn't we be headquartering? couldn't you be headquartering? couldn't they be headquartering?
Perfect	V-ing perfect
couldn't I have headquartered? couldn't you have headquartered? couldn't she have headquartered? couldn't we have headquartered? couldn't you have headquartered? couldn't they have headquartered?	couldn't I have been headquartering? couldn't you have been headquartering? couldn't she have been headquartering? couldn't we have been headquartering? couldn't you have been headquartering? couldn't they have been headquartering?