should widen
Regular verb: widen - widened- widened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd widen
you'd widen
she'd widen
we'd widen
you'd widen
they'd widen 	I'd be widening
you'd be widening
she'd be widening
we'd be widening
you'd be widening
they'd be widening	I should've widened
you should've widened
she should've widened
we should've widened
you should've widened
they should've widened	I should've been widening
you should've been widening
she should've been widening
we should've been widening
you should've been widening
they should've been widening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't widen
you shouldn't widen
she shouldn't widen
we shouldn't widen
you shouldn't widen
they shouldn't widen 	I shouldn't be widening
you shouldn't be widening
she shouldn't be widening
we shouldn't be widening
you shouldn't be widening
they shouldn't be widening	I shouldn't have widened
you shouldn't have widened
she shouldn't have widened
we shouldn't have widened
you shouldn't have widened
they shouldn't have widened	I shouldn't have been widening
you shouldn't have been widening
she shouldn't have been widening
we shouldn't have been widening
you shouldn't have been widening
they shouldn't have been widening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I widen?
should you widen?
should she widen?
should we widen?
should you widen?
should they widen? 	should I be widening?
should you be widening?
should she be widening?
should we be widening?
should you be widening?
should they be widening? 	should I have widened?
should you have widened?
should she have widened?
should we have widened?
should you have widened?
should they have widened? 	should I have been widening?
should you have been widening?
should she have been widening?
should we have been widening?
should you have been widening?
should they have been widening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I widen?
shouldn't you widen?
shouldn't she widen?
shouldn't we widen?
shouldn't you widen?
shouldn't they widen? 	shouldn't I be widening?
shouldn't you be widening?
shouldn't she be widening?
shouldn't we be widening?
shouldn't you be widening?
shouldn't they be widening? 	shouldn't I have widened?
shouldn't you have widened?
shouldn't she have widened?
shouldn't we have widened?
shouldn't you have widened?
shouldn't they have widened? 	shouldn't I have been widening?
shouldn't you have been widening?
shouldn't she have been widening?
shouldn't we have been widening?
shouldn't you have been widening?
shouldn't they have been widening?