could tiller
Verbe régulier : tiller - tillered- tillered

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could tiller
you could tiller
he could tiller
we could tiller
you could tiller
they could tiller 	I could be tillering
you could be tillering
he could be tillering
we could be tillering
you could be tillering
they could be tillering	I could have tillered
you could have tillered
he could have tillered
we could have tillered
you could have tillered
they could have tillered	I could have been tillering
you could have been tillering
he could have been tillering
we could have been tillering
you could have been tillering
they could have been tillering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't tiller
you couldn't tiller
he couldn't tiller
we couldn't tiller
you couldn't tiller
they couldn't tiller 	I couldn't be tillering
you couldn't be tillering
he couldn't be tillering
we couldn't be tillering
you couldn't be tillering
they couldn't be tillering	I couldn't have tillered
you couldn't have tillered
he couldn't have tillered
we couldn't have tillered
you couldn't have tillered
they couldn't have tillered	I couldn't have been tillering
you couldn't have been tillering
he couldn't have been tillering
we couldn't have been tillering
you couldn't have been tillering
they couldn't have been tillering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I tiller?
could you tiller?
could he tiller?
could we tiller?
could you tiller?
could they tiller? 	could I be tillering?
could you be tillering?
could he be tillering?
could we be tillering?
could you be tillering?
could they be tillering? 	could I have tillered?
could you have tillered?
could he have tillered?
could we have tillered?
could you have tillered?
could they have tillered? 	could I have been tillering?
could you have been tillering?
could he have been tillering?
could we have been tillering?
could you have been tillering?
could they have been tillering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I tiller?
couldn't you tiller?
couldn't he tiller?
couldn't we tiller?
couldn't you tiller?
couldn't they tiller? 	couldn't I be tillering?
couldn't you be tillering?
couldn't he be tillering?
couldn't we be tillering?
couldn't you be tillering?
couldn't they be tillering? 	couldn't I have tillered?
couldn't you have tillered?
couldn't he have tillered?
couldn't we have tillered?
couldn't you have tillered?
couldn't they have tillered? 	couldn't I have been tillering?
couldn't you have been tillering?
couldn't he have been tillering?
couldn't we have been tillering?
couldn't you have been tillering?
couldn't they have been tillering?