could slipcover
Verbe régulier : slipcover - slipcovered- slipcovered

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could slipcover
you could slipcover
he could slipcover
we could slipcover
you could slipcover
they could slipcover 	I could be slipcovering
you could be slipcovering
he could be slipcovering
we could be slipcovering
you could be slipcovering
they could be slipcovering	I could have slipcovered
you could have slipcovered
he could have slipcovered
we could have slipcovered
you could have slipcovered
they could have slipcovered	I could have been slipcovering
you could have been slipcovering
he could have been slipcovering
we could have been slipcovering
you could have been slipcovering
they could have been slipcovering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't slipcover
you couldn't slipcover
he couldn't slipcover
we couldn't slipcover
you couldn't slipcover
they couldn't slipcover 	I couldn't be slipcovering
you couldn't be slipcovering
he couldn't be slipcovering
we couldn't be slipcovering
you couldn't be slipcovering
they couldn't be slipcovering	I couldn't have slipcovered
you couldn't have slipcovered
he couldn't have slipcovered
we couldn't have slipcovered
you couldn't have slipcovered
they couldn't have slipcovered	I couldn't have been slipcovering
you couldn't have been slipcovering
he couldn't have been slipcovering
we couldn't have been slipcovering
you couldn't have been slipcovering
they couldn't have been slipcovering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I slipcover?
could you slipcover?
could he slipcover?
could we slipcover?
could you slipcover?
could they slipcover? 	could I be slipcovering?
could you be slipcovering?
could he be slipcovering?
could we be slipcovering?
could you be slipcovering?
could they be slipcovering? 	could I have slipcovered?
could you have slipcovered?
could he have slipcovered?
could we have slipcovered?
could you have slipcovered?
could they have slipcovered? 	could I have been slipcovering?
could you have been slipcovering?
could he have been slipcovering?
could we have been slipcovering?
could you have been slipcovering?
could they have been slipcovering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I slipcover?
couldn't you slipcover?
couldn't he slipcover?
couldn't we slipcover?
couldn't you slipcover?
couldn't they slipcover? 	couldn't I be slipcovering?
couldn't you be slipcovering?
couldn't he be slipcovering?
couldn't we be slipcovering?
couldn't you be slipcovering?
couldn't they be slipcovering? 	couldn't I have slipcovered?
couldn't you have slipcovered?
couldn't he have slipcovered?
couldn't we have slipcovered?
couldn't you have slipcovered?
couldn't they have slipcovered? 	couldn't I have been slipcovering?
couldn't you have been slipcovering?
couldn't he have been slipcovering?
couldn't we have been slipcovering?
couldn't you have been slipcovering?
couldn't they have been slipcovering?