could impound
Regular verb: impound - impounded- impounded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could impound
you could impound
she could impound
we could impound
you could impound
they could impound 	I could be impounding
you could be impounding
she could be impounding
we could be impounding
you could be impounding
they could be impounding	I could have impounded
you could have impounded
she could have impounded
we could have impounded
you could have impounded
they could have impounded	I could have been impounding
you could have been impounding
she could have been impounding
we could have been impounding
you could have been impounding
they could have been impounding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not impound
you could not impound
she could not impound
we could not impound
you could not impound
they could not impound 	I could not be impounding
you could not be impounding
she could not be impounding
we could not be impounding
you could not be impounding
they could not be impounding	I could not have impounded
you could not have impounded
she could not have impounded
we could not have impounded
you could not have impounded
they could not have impounded	I could not have been impounding
you could not have been impounding
she could not have been impounding
we could not have been impounding
you could not have been impounding
they could not have been impounding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I impound?
could you impound?
could she impound?
could we impound?
could you impound?
could they impound? 	could I be impounding?
could you be impounding?
could she be impounding?
could we be impounding?
could you be impounding?
could they be impounding? 	could I have impounded?
could you have impounded?
could she have impounded?
could we have impounded?
could you have impounded?
could they have impounded? 	could I have been impounding?
could you have been impounding?
could she have been impounding?
could we have been impounding?
could you have been impounding?
could they have been impounding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not impound?
could you not impound?
could she not impound?
could we not impound?
could you not impound?
could they not impound? 	could I not be impounding?
could you not be impounding?
could she not be impounding?
could we not be impounding?
could you not be impounding?
could they not be impounding? 	could I not have impounded?
could you not have impounded?
could she not have impounded?
could we not have impounded?
could you not have impounded?
could they not have impounded? 	could I not have been impounding?
could you not have been impounding?
could she not have been impounding?
could we not have been impounding?
could you not have been impounding?
could they not have been impounding?