could slipcover
Regular verb: slipcover - slipcovered- slipcovered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could slipcover
you could slipcover
she could slipcover
we could slipcover
you could slipcover
they could slipcover 	I could be slipcovering
you could be slipcovering
she could be slipcovering
we could be slipcovering
you could be slipcovering
they could be slipcovering	I could have slipcovered
you could have slipcovered
she 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
she could have been slipcovering
we could have been slipcovering
you could have been slipcovering
they could have been slipcovering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not slipcover
you could not slipcover
she could not slipcover
we could not slipcover
you could not slipcover
they could not slipcover 	I could not be slipcovering
you could not be slipcovering
she could not be slipcovering
we could not be slipcovering
you could not be slipcovering
they could not be slipcovering	I could not have slipcovered
you could not have slipcovered
she could not have slipcovered
we could not have slipcovered
you could not have slipcovered
they could not have slipcovered	I could not have been slipcovering
you could not have been slipcovering
she could not have been slipcovering
we could not have been slipcovering
you could not have been slipcovering
they could not have been slipcovering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I slipcover?
could you slipcover?
could she slipcover?
could we slipcover?
could you slipcover?
could they slipcover? 	could I be slipcovering?
could you be slipcovering?
could she be slipcovering?
could we be slipcovering?
could you be slipcovering?
could they be slipcovering? 	could I have slipcovered?
could you have slipcovered?
could she 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 she have been slipcovering?
could we have been slipcovering?
could you have been slipcovering?
could they have been slipcovering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not slipcover?
could you not slipcover?
could she not slipcover?
could we not slipcover?
could you not slipcover?
could they not slipcover? 	could I not be slipcovering?
could you not be slipcovering?
could she not be slipcovering?
could we not be slipcovering?
could you not be slipcovering?
could they not be slipcovering? 	could I not have slipcovered?
could you not have slipcovered?
could she not have slipcovered?
could we not have slipcovered?
could you not have slipcovered?
could they not have slipcovered? 	could I not have been slipcovering?
could you not have been slipcovering?
could she not have been slipcovering?
could we not have been slipcovering?
could you not have been slipcovering?
could they not have been slipcovering?