can grok
Verbe régulier : grok - groked- groked

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

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

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

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