could knoll
Verbe régulier : knoll - knolled- knolled

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could knoll
you could knoll
he could knoll
we could knoll
you could knoll
they could knoll 	I could be knolling
you could be knolling
he could be knolling
we could be knolling
you could be knolling
they could be knolling	I could have knolled
you could have knolled
he could have knolled
we could have knolled
you could have knolled
they could have knolled	I could have been knolling
you could have been knolling
he could have been knolling
we could have been knolling
you could have been knolling
they could have been knolling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't knoll
you couldn't knoll
he couldn't knoll
we couldn't knoll
you couldn't knoll
they couldn't knoll 	I couldn't be knolling
you couldn't be knolling
he couldn't be knolling
we couldn't be knolling
you couldn't be knolling
they couldn't be knolling	I couldn't have knolled
you couldn't have knolled
he couldn't have knolled
we couldn't have knolled
you couldn't have knolled
they couldn't have knolled	I couldn't have been knolling
you couldn't have been knolling
he couldn't have been knolling
we couldn't have been knolling
you couldn't have been knolling
they couldn't have been knolling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I knoll?
could you knoll?
could he knoll?
could we knoll?
could you knoll?
could they knoll? 	could I be knolling?
could you be knolling?
could he be knolling?
could we be knolling?
could you be knolling?
could they be knolling? 	could I have knolled?
could you have knolled?
could he have knolled?
could we have knolled?
could you have knolled?
could they have knolled? 	could I have been knolling?
could you have been knolling?
could he have been knolling?
could we have been knolling?
could you have been knolling?
could they have been knolling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I knoll?
couldn't you knoll?
couldn't he knoll?
couldn't we knoll?
couldn't you knoll?
couldn't they knoll? 	couldn't I be knolling?
couldn't you be knolling?
couldn't he be knolling?
couldn't we be knolling?
couldn't you be knolling?
couldn't they be knolling? 	couldn't I have knolled?
couldn't you have knolled?
couldn't he have knolled?
couldn't we have knolled?
couldn't you have knolled?
couldn't they have knolled? 	couldn't I have been knolling?
couldn't you have been knolling?
couldn't he have been knolling?
couldn't we have been knolling?
couldn't you have been knolling?
couldn't they have been knolling?