should underlie
Irregular verb: underlie - underlay- underlain

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd underlie
you'd underlie
she'd underlie
we'd underlie
you'd underlie
they'd underlie 	I'd be underlying
you'd be underlying
she'd be underlying
we'd be underlying
you'd be underlying
they'd be underlying	I should've underlain
you should've underlain
she should've underlain
we should've underlain
you should've underlain
they should've underlain	I should've been underlying
you should've been underlying
she should've been underlying
we should've been underlying
you should've been underlying
they should've been underlying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't underlie
you shouldn't underlie
she shouldn't underlie
we shouldn't underlie
you shouldn't underlie
they shouldn't underlie 	I shouldn't be underlying
you shouldn't be underlying
she shouldn't be underlying
we shouldn't be underlying
you shouldn't be underlying
they shouldn't be underlying	I shouldn't have underlain
you shouldn't have underlain
she shouldn't have underlain
we shouldn't have underlain
you shouldn't have underlain
they shouldn't have underlain	I shouldn't have been underlying
you shouldn't have been underlying
she shouldn't have been underlying
we shouldn't have been underlying
you shouldn't have been underlying
they shouldn't have been underlying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I underlie?
should you underlie?
should she underlie?
should we underlie?
should you underlie?
should they underlie? 	should I be underlying?
should you be underlying?
should she be underlying?
should we be underlying?
should you be underlying?
should they be underlying? 	should I have underlain?
should you have underlain?
should she have underlain?
should we have underlain?
should you have underlain?
should they have underlain? 	should I have been underlying?
should you have been underlying?
should she have been underlying?
should we have been underlying?
should you have been underlying?
should they have been underlying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I underlie?
shouldn't you underlie?
shouldn't she underlie?
shouldn't we underlie?
shouldn't you underlie?
shouldn't they underlie? 	shouldn't I be underlying?
shouldn't you be underlying?
shouldn't she be underlying?
shouldn't we be underlying?
shouldn't you be underlying?
shouldn't they be underlying? 	shouldn't I have underlain?
shouldn't you have underlain?
shouldn't she have underlain?
shouldn't we have underlain?
shouldn't you have underlain?
shouldn't they have underlain? 	shouldn't I have been underlying?
shouldn't you have been underlying?
shouldn't she have been underlying?
shouldn't we have been underlying?
shouldn't you have been underlying?
shouldn't they have been underlying?