could decoy
Regular verb: decoy - decoyed- decoyed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could decoy
you could decoy
he could decoy
we could decoy
you could decoy
they could decoy 	I could be decoying
you could be decoying
he could be decoying
we could be decoying
you could be decoying
they could be decoying	I could have decoyed
you could have decoyed
he could have decoyed
we could have decoyed
you could have decoyed
they could have decoyed	I could have been decoying
you could have been decoying
he could have been decoying
we could have been decoying
you could have been decoying
they could have been decoying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not decoy
you could not decoy
he could not decoy
we could not decoy
you could not decoy
they could not decoy 	I could not be decoying
you could not be decoying
he could not be decoying
we could not be decoying
you could not be decoying
they could not be decoying	I could not have decoyed
you could not have decoyed
he could not have decoyed
we could not have decoyed
you could not have decoyed
they could not have decoyed	I could not have been decoying
you could not have been decoying
he could not have been decoying
we could not have been decoying
you could not have been decoying
they could not have been decoying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I decoy?
could you decoy?
could he decoy?
could we decoy?
could you decoy?
could they decoy? 	could I be decoying?
could you be decoying?
could he be decoying?
could we be decoying?
could you be decoying?
could they be decoying? 	could I have decoyed?
could you have decoyed?
could he have decoyed?
could we have decoyed?
could you have decoyed?
could they have decoyed? 	could I have been decoying?
could you have been decoying?
could he have been decoying?
could we have been decoying?
could you have been decoying?
could they have been decoying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not decoy?
could you not decoy?
could he not decoy?
could we not decoy?
could you not decoy?
could they not decoy? 	could I not be decoying?
could you not be decoying?
could he not be decoying?
could we not be decoying?
could you not be decoying?
could they not be decoying? 	could I not have decoyed?
could you not have decoyed?
could he not have decoyed?
could we not have decoyed?
could you not have decoyed?
could they not have decoyed? 	could I not have been decoying?
could you not have been decoying?
could he not have been decoying?
could we not have been decoying?
could you not have been decoying?
could they not have been decoying?