can grump
Verbe régulier : grump - grumped- grumped

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can grump
you can grump
he can grump
we can grump
you can grump
they can grump 	I can be grumping
you can be grumping
he can be grumping
we can be grumping
you can be grumping
they can be grumping	I can have grumped
you can have grumped
he can have grumped
we can have grumped
you can have grumped
they can have grumped	I can have been grumping
you can have been grumping
he can have been grumping
we can have been grumping
you can have been grumping
they can have been grumping	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can't grump
you can't grump
he can't grump
we can't grump
you can't grump
they can't grump 	I can't be grumping
you can't be grumping
he can't be grumping
we can't be grumping
you can't be grumping
they can't be grumping	I can't have grumped
you can't have grumped
he can't have grumped
we can't have grumped
you can't have grumped
they can't have grumped	I can't have been grumping
you can't have been grumping
he can't have been grumping
we can't have been grumping
you can't have been grumping
they can't have been grumping	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I grump?
can you grump?
can he grump?
can we grump?
can you grump?
can they grump? 	can I be grumping?
can you be grumping?
can he be grumping?
can we be grumping?
can you be grumping?
can they be grumping? 	can I have grumped?
can you have grumped?
can he have grumped?
can we have grumped?
can you have grumped?
can they have grumped? 	can I have been grumping?
can you have been grumping?
can he have been grumping?
can we have been grumping?
can you have been grumping?
can they have been grumping? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can't I grump?
can't you grump?
can't he grump?
can't we grump?
can't you grump?
can't they grump? 	can't I be grumping?
can't you be grumping?
can't he be grumping?
can't we be grumping?
can't you be grumping?
can't they be grumping? 	can't I have grumped?
can't you have grumped?
can't he have grumped?
can't we have grumped?
can't you have grumped?
can't they have grumped? 	can't I have been grumping?
can't you have been grumping?
can't he have been grumping?
can't we have been grumping?
can't you have been grumping?
can't they have been grumping?