should underinsure
Regular verb: underinsure - underinsured- underinsured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd underinsure
you'd underinsure
he'd underinsure
we'd underinsure
you'd underinsure
they'd underinsure 	I'd be underinsuring
you'd be underinsuring
he'd be underinsuring
we'd be underinsuring
you'd be underinsuring
they'd be underinsuring	I should've underinsured
you should've underinsured
he 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
he 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
he 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
he 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
he 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
he 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 he underinsure?
should we underinsure?
should you underinsure?
should they underinsure? 	should I be underinsuring?
should you be underinsuring?
should he be underinsuring?
should we be underinsuring?
should you be underinsuring?
should they be underinsuring? 	should I have underinsured?
should you have underinsured?
should he 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 he 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 he 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 he 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 he 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 he have been underinsuring?
shouldn't we have been underinsuring?
shouldn't you have been underinsuring?
shouldn't they have been underinsuring?