could presterilise
Verbe régulier : presterilise - presterilised- presterilised

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could presterilise
you could presterilise
he could presterilise
we could presterilise
you could presterilise
they could presterilise 	I could be presterilising
you could be presterilising
he could be presterilising
we could be presterilising
you could be presterilising
they could be presterilising	I could have presterilised
you could have presterilised
he could have presterilised
we could have presterilised
you could have presterilised
they could have presterilised	I could have been presterilising
you could have been presterilising
he could have been presterilising
we could have been presterilising
you could have been presterilising
they could have been presterilising	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't presterilise
you couldn't presterilise
he couldn't presterilise
we couldn't presterilise
you couldn't presterilise
they couldn't presterilise 	I couldn't be presterilising
you couldn't be presterilising
he couldn't be presterilising
we couldn't be presterilising
you couldn't be presterilising
they couldn't be presterilising	I couldn't have presterilised
you couldn't have presterilised
he couldn't have presterilised
we couldn't have presterilised
you couldn't have presterilised
they couldn't have presterilised	I couldn't have been presterilising
you couldn't have been presterilising
he couldn't have been presterilising
we couldn't have been presterilising
you couldn't have been presterilising
they couldn't have been presterilising	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I presterilise?
could you presterilise?
could he presterilise?
could we presterilise?
could you presterilise?
could they presterilise? 	could I be presterilising?
could you be presterilising?
could he be presterilising?
could we be presterilising?
could you be presterilising?
could they be presterilising? 	could I have presterilised?
could you have presterilised?
could he have presterilised?
could we have presterilised?
could you have presterilised?
could they have presterilised? 	could I have been presterilising?
could you have been presterilising?
could he have been presterilising?
could we have been presterilising?
could you have been presterilising?
could they have been presterilising? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I presterilise?
couldn't you presterilise?
couldn't he presterilise?
couldn't we presterilise?
couldn't you presterilise?
couldn't they presterilise? 	couldn't I be presterilising?
couldn't you be presterilising?
couldn't he be presterilising?
couldn't we be presterilising?
couldn't you be presterilising?
couldn't they be presterilising? 	couldn't I have presterilised?
couldn't you have presterilised?
couldn't he have presterilised?
couldn't we have presterilised?
couldn't you have presterilised?
couldn't they have presterilised? 	couldn't I have been presterilising?
couldn't you have been presterilising?
couldn't he have been presterilising?
couldn't we have been presterilising?
couldn't you have been presterilising?
couldn't they have been presterilising?