should expound
Regular verb: expound - expounded- expounded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd expound
you'd expound
he'd expound
we'd expound
you'd expound
they'd expound 	I'd be expounding
you'd be expounding
he'd be expounding
we'd be expounding
you'd be expounding
they'd be expounding	I should've expounded
you should've expounded
he should've expounded
we should've expounded
you should've expounded
they should've expounded	I should've been expounding
you should've been expounding
he should've been expounding
we should've been expounding
you should've been expounding
they should've been expounding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't expound
you shouldn't expound
he shouldn't expound
we shouldn't expound
you shouldn't expound
they shouldn't expound 	I shouldn't be expounding
you shouldn't be expounding
he shouldn't be expounding
we shouldn't be expounding
you shouldn't be expounding
they shouldn't be expounding	I shouldn't have expounded
you shouldn't have expounded
he shouldn't have expounded
we shouldn't have expounded
you shouldn't have expounded
they shouldn't have expounded	I shouldn't have been expounding
you shouldn't have been expounding
he shouldn't have been expounding
we shouldn't have been expounding
you shouldn't have been expounding
they shouldn't have been expounding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I expound?
should you expound?
should he expound?
should we expound?
should you expound?
should they expound? 	should I be expounding?
should you be expounding?
should he be expounding?
should we be expounding?
should you be expounding?
should they be expounding? 	should I have expounded?
should you have expounded?
should he have expounded?
should we have expounded?
should you have expounded?
should they have expounded? 	should I have been expounding?
should you have been expounding?
should he have been expounding?
should we have been expounding?
should you have been expounding?
should they have been expounding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I expound?
shouldn't you expound?
shouldn't he expound?
shouldn't we expound?
shouldn't you expound?
shouldn't they expound? 	shouldn't I be expounding?
shouldn't you be expounding?
shouldn't he be expounding?
shouldn't we be expounding?
shouldn't you be expounding?
shouldn't they be expounding? 	shouldn't I have expounded?
shouldn't you have expounded?
shouldn't he have expounded?
shouldn't we have expounded?
shouldn't you have expounded?
shouldn't they have expounded? 	shouldn't I have been expounding?
shouldn't you have been expounding?
shouldn't he have been expounding?
shouldn't we have been expounding?
shouldn't you have been expounding?
shouldn't they have been expounding?