could yackety-yak
Verbe régulier : yackety-yak - yackety-yaked- yackety-yaked
Traduction française : jacasser 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could yackety-yak
you could yackety-yak
he could yackety-yak
we could yackety-yak
you could yackety-yak
they could yackety-yak 	I could be yackety-yaking
you could be yackety-yaking
he could be yackety-yaking
we could be yackety-yaking
you could be yackety-yaking
they could be yackety-yaking	I could have yackety-yaked
you could have yackety-yaked
he could have yackety-yaked
we could have yackety-yaked
you could have yackety-yaked
they could have yackety-yaked	I could have been yackety-yaking
you could have been yackety-yaking
he could have been yackety-yaking
we could have been yackety-yaking
you could have been yackety-yaking
they could have been yackety-yaking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't yackety-yak
you couldn't yackety-yak
he couldn't yackety-yak
we couldn't yackety-yak
you couldn't yackety-yak
they couldn't yackety-yak 	I couldn't be yackety-yaking
you couldn't be yackety-yaking
he couldn't be yackety-yaking
we couldn't be yackety-yaking
you couldn't be yackety-yaking
they couldn't be yackety-yaking	I couldn't have yackety-yaked
you couldn't have yackety-yaked
he couldn't have yackety-yaked
we couldn't have yackety-yaked
you couldn't have yackety-yaked
they couldn't have yackety-yaked	I couldn't have been yackety-yaking
you couldn't have been yackety-yaking
he couldn't have been yackety-yaking
we couldn't have been yackety-yaking
you couldn't have been yackety-yaking
they couldn't have been yackety-yaking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I yackety-yak?
could you yackety-yak?
could he yackety-yak?
could we yackety-yak?
could you yackety-yak?
could they yackety-yak? 	could I be yackety-yaking?
could you be yackety-yaking?
could he be yackety-yaking?
could we be yackety-yaking?
could you be yackety-yaking?
could they be yackety-yaking? 	could I have yackety-yaked?
could you have yackety-yaked?
could he have yackety-yaked?
could we have yackety-yaked?
could you have yackety-yaked?
could they have yackety-yaked? 	could I have been yackety-yaking?
could you have been yackety-yaking?
could he have been yackety-yaking?
could we have been yackety-yaking?
could you have been yackety-yaking?
could they have been yackety-yaking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I yackety-yak?
couldn't you yackety-yak?
couldn't he yackety-yak?
couldn't we yackety-yak?
couldn't you yackety-yak?
couldn't they yackety-yak? 	couldn't I be yackety-yaking?
couldn't you be yackety-yaking?
couldn't he be yackety-yaking?
couldn't we be yackety-yaking?
couldn't you be yackety-yaking?
couldn't they be yackety-yaking? 	couldn't I have yackety-yaked?
couldn't you have yackety-yaked?
couldn't he have yackety-yaked?
couldn't we have yackety-yaked?
couldn't you have yackety-yaked?
couldn't they have yackety-yaked? 	couldn't I have been yackety-yaking?
couldn't you have been yackety-yaking?
couldn't he have been yackety-yaking?
couldn't we have been yackety-yaking?
couldn't you have been yackety-yaking?
couldn't they have been yackety-yaking?