could whirr
Verbe régulier : whirr - whirred- whirred
Traduction française : bruire - ronronner 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could whirr
you could whirr
he could whirr
we could whirr
you could whirr
they could whirr 	I could be whirring
you could be whirring
he could be whirring
we could be whirring
you could be whirring
they could be whirring	I could have whirred
you could have whirred
he could have whirred
we could have whirred
you could have whirred
they could have whirred	I could have been whirring
you could have been whirring
he could have been whirring
we could have been whirring
you could have been whirring
they could have been whirring	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't whirr
you couldn't whirr
he couldn't whirr
we couldn't whirr
you couldn't whirr
they couldn't whirr 	I couldn't be whirring
you couldn't be whirring
he couldn't be whirring
we couldn't be whirring
you couldn't be whirring
they couldn't be whirring	I couldn't have whirred
you couldn't have whirred
he couldn't have whirred
we couldn't have whirred
you couldn't have whirred
they couldn't have whirred	I couldn't have been whirring
you couldn't have been whirring
he couldn't have been whirring
we couldn't have been whirring
you couldn't have been whirring
they couldn't have been whirring	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I whirr?
could you whirr?
could he whirr?
could we whirr?
could you whirr?
could they whirr? 	could I be whirring?
could you be whirring?
could he be whirring?
could we be whirring?
could you be whirring?
could they be whirring? 	could I have whirred?
could you have whirred?
could he have whirred?
could we have whirred?
could you have whirred?
could they have whirred? 	could I have been whirring?
could you have been whirring?
could he have been whirring?
could we have been whirring?
could you have been whirring?
could they have been whirring? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I whirr?
couldn't you whirr?
couldn't he whirr?
couldn't we whirr?
couldn't you whirr?
couldn't they whirr? 	couldn't I be whirring?
couldn't you be whirring?
couldn't he be whirring?
couldn't we be whirring?
couldn't you be whirring?
couldn't they be whirring? 	couldn't I have whirred?
couldn't you have whirred?
couldn't he have whirred?
couldn't we have whirred?
couldn't you have whirred?
couldn't they have whirred? 	couldn't I have been whirring?
couldn't you have been whirring?
couldn't he have been whirring?
couldn't we have been whirring?
couldn't you have been whirring?
couldn't they have been whirring?