should underinsure
Regular verb: underinsure - underinsured- underinsured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd underinsure
you'd underinsure
she'd underinsure
we'd underinsure
you'd underinsure
they'd underinsure 	I'd be underinsuring
you'd be underinsuring
she'd be underinsuring
we'd be underinsuring
you'd be underinsuring
they'd be underinsuring	I should've underinsured
you should've underinsured
she should've underinsured
we should've underinsured
you should've underinsured
they should've underinsured	I should've been underinsuring
you should've been underinsuring
she should've been underinsuring
we should've been underinsuring
you should've been underinsuring
they should've been underinsuring	

Negation 	
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I shouldn't underinsure
you shouldn't underinsure
she shouldn't underinsure
we shouldn't underinsure
you shouldn't underinsure
they shouldn't underinsure 	I shouldn't be underinsuring
you shouldn't be underinsuring
she shouldn't be underinsuring
we shouldn't be underinsuring
you shouldn't be underinsuring
they shouldn't be underinsuring	I shouldn't have underinsured
you shouldn't have underinsured
she shouldn't have underinsured
we shouldn't have underinsured
you shouldn't have underinsured
they shouldn't have underinsured	I shouldn't have been underinsuring
you shouldn't have been underinsuring
she shouldn't have been underinsuring
we shouldn't have been underinsuring
you shouldn't have been underinsuring
they shouldn't have been underinsuring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I underinsure?
should you underinsure?
should she underinsure?
should we underinsure?
should you underinsure?
should they underinsure? 	should I be underinsuring?
should you be underinsuring?
should she be underinsuring?
should we be underinsuring?
should you be underinsuring?
should they be underinsuring? 	should I have underinsured?
should you have underinsured?
should she have underinsured?
should we have underinsured?
should you have underinsured?
should they have underinsured? 	should I have been underinsuring?
should you have been underinsuring?
should she have been underinsuring?
should we have been underinsuring?
should you have been underinsuring?
should they have been underinsuring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I underinsure?
shouldn't you underinsure?
shouldn't she underinsure?
shouldn't we underinsure?
shouldn't you underinsure?
shouldn't they underinsure? 	shouldn't I be underinsuring?
shouldn't you be underinsuring?
shouldn't she be underinsuring?
shouldn't we be underinsuring?
shouldn't you be underinsuring?
shouldn't they be underinsuring? 	shouldn't I have underinsured?
shouldn't you have underinsured?
shouldn't she have underinsured?
shouldn't we have underinsured?
shouldn't you have underinsured?
shouldn't they have underinsured? 	shouldn't I have been underinsuring?
shouldn't you have been underinsuring?
shouldn't she have been underinsuring?
shouldn't we have been underinsuring?
shouldn't you have been underinsuring?
shouldn't they have been underinsuring?