could grok
Verbe régulier : grok - groked- groked

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could grok
you could grok
he could grok
we could grok
you could grok
they could grok 	I could be groking
you could be groking
he could be groking
we could be groking
you could be groking
they could be groking	I could have groked
you could have groked
he could have groked
we could have groked
you could have groked
they could have groked	I could have been groking
you could have been groking
he could have been groking
we could have been groking
you could have been groking
they could have been groking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't grok
you couldn't grok
he couldn't grok
we couldn't grok
you couldn't grok
they couldn't grok 	I couldn't be groking
you couldn't be groking
he couldn't be groking
we couldn't be groking
you couldn't be groking
they couldn't be groking	I couldn't have groked
you couldn't have groked
he couldn't have groked
we couldn't have groked
you couldn't have groked
they couldn't have groked	I couldn't have been groking
you couldn't have been groking
he couldn't have been groking
we couldn't have been groking
you couldn't have been groking
they couldn't have been groking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I grok?
could you grok?
could he grok?
could we grok?
could you grok?
could they grok? 	could I be groking?
could you be groking?
could he be groking?
could we be groking?
could you be groking?
could they be groking? 	could I have groked?
could you have groked?
could he have groked?
could we have groked?
could you have groked?
could they have groked? 	could I have been groking?
could you have been groking?
could he have been groking?
could we have been groking?
could you have been groking?
could they have been groking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I grok?
couldn't you grok?
couldn't he grok?
couldn't we grok?
couldn't you grok?
couldn't they grok? 	couldn't I be groking?
couldn't you be groking?
couldn't he be groking?
couldn't we be groking?
couldn't you be groking?
couldn't they be groking? 	couldn't I have groked?
couldn't you have groked?
couldn't he have groked?
couldn't we have groked?
couldn't you have groked?
couldn't they have groked? 	couldn't I have been groking?
couldn't you have been groking?
couldn't he have been groking?
couldn't we have been groking?
couldn't you have been groking?
couldn't they have been groking?