should impound
Regular verb: impound - impounded- impounded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd impound
you'd impound
she'd impound
we'd impound
you'd impound
they'd impound 	I'd be impounding
you'd be impounding
she'd be impounding
we'd be impounding
you'd be impounding
they'd be impounding	I should've impounded
you should've impounded
she should've impounded
we should've impounded
you should've impounded
they should've impounded	I should've been impounding
you should've been impounding
she should've been impounding
we should've been impounding
you should've been impounding
they should've been impounding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't impound
you shouldn't impound
she shouldn't impound
we shouldn't impound
you shouldn't impound
they shouldn't impound 	I shouldn't be impounding
you shouldn't be impounding
she shouldn't be impounding
we shouldn't be impounding
you shouldn't be impounding
they shouldn't be impounding	I shouldn't have impounded
you shouldn't have impounded
she shouldn't have impounded
we shouldn't have impounded
you shouldn't have impounded
they shouldn't have impounded	I shouldn't have been impounding
you shouldn't have been impounding
she shouldn't have been impounding
we shouldn't have been impounding
you shouldn't have been impounding
they shouldn't have been impounding	

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

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