could preobtain
Verbe régulier : preobtain - preobtained- preobtained

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could preobtain
you could preobtain
he could preobtain
we could preobtain
you could preobtain
they could preobtain 	I could be preobtaining
you could be preobtaining
he could be preobtaining
we could be preobtaining
you could be preobtaining
they could be preobtaining	I could have preobtained
you could have preobtained
he could have preobtained
we could have preobtained
you could have preobtained
they could have preobtained	I could have been preobtaining
you could have been preobtaining
he could have been preobtaining
we could have been preobtaining
you could have been preobtaining
they could have been preobtaining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't preobtain
you couldn't preobtain
he couldn't preobtain
we couldn't preobtain
you couldn't preobtain
they couldn't preobtain 	I couldn't be preobtaining
you couldn't be preobtaining
he couldn't be preobtaining
we couldn't be preobtaining
you couldn't be preobtaining
they couldn't be preobtaining	I couldn't have preobtained
you couldn't have preobtained
he couldn't have preobtained
we couldn't have preobtained
you couldn't have preobtained
they couldn't have preobtained	I couldn't have been preobtaining
you couldn't have been preobtaining
he couldn't have been preobtaining
we couldn't have been preobtaining
you couldn't have been preobtaining
they couldn't have been preobtaining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I preobtain?
could you preobtain?
could he preobtain?
could we preobtain?
could you preobtain?
could they preobtain? 	could I be preobtaining?
could you be preobtaining?
could he be preobtaining?
could we be preobtaining?
could you be preobtaining?
could they be preobtaining? 	could I have preobtained?
could you have preobtained?
could he have preobtained?
could we have preobtained?
could you have preobtained?
could they have preobtained? 	could I have been preobtaining?
could you have been preobtaining?
could he have been preobtaining?
could we have been preobtaining?
could you have been preobtaining?
could they have been preobtaining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I preobtain?
couldn't you preobtain?
couldn't he preobtain?
couldn't we preobtain?
couldn't you preobtain?
couldn't they preobtain? 	couldn't I be preobtaining?
couldn't you be preobtaining?
couldn't he be preobtaining?
couldn't we be preobtaining?
couldn't you be preobtaining?
couldn't they be preobtaining? 	couldn't I have preobtained?
couldn't you have preobtained?
couldn't he have preobtained?
couldn't we have preobtained?
couldn't you have preobtained?
couldn't they have preobtained? 	couldn't I have been preobtaining?
couldn't you have been preobtaining?
couldn't he have been preobtaining?
couldn't we have been preobtaining?
couldn't you have been preobtaining?
couldn't they have been preobtaining?