could headquarter
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Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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	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	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't headquarter
you couldn't headquarter
he 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
he couldn't be headquartering
we couldn't be headquartering
you couldn't be headquartering
they couldn't be headquartering	I couldn't have headquartered
you couldn't have headquartered
he 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
he couldn't have been headquartering
we couldn't have been headquartering
you couldn't have been headquartering
they couldn't have been headquartering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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? 	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? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I headquarter?
couldn't you headquarter?
couldn't he 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 he be headquartering?
couldn't we be headquartering?
couldn't you be headquartering?
couldn't they be headquartering? 	couldn't I have headquartered?
couldn't you have headquartered?
couldn't he 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 he have been headquartering?
couldn't we have been headquartering?
couldn't you have been headquartering?
couldn't they have been headquartering?