should prevalue
Regular verb: prevalue - prevalued- prevalued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd prevalue
you'd prevalue
he'd prevalue
we'd prevalue
you'd prevalue
they'd prevalue 	I'd be prevaluing
you'd be prevaluing
he'd be prevaluing
we'd be prevaluing
you'd be prevaluing
they'd be prevaluing	I should've prevalued
you should've prevalued
he should've prevalued
we should've prevalued
you should've prevalued
they should've prevalued	I should've been prevaluing
you should've been prevaluing
he should've been prevaluing
we should've been prevaluing
you should've been prevaluing
they should've been prevaluing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't prevalue
you shouldn't prevalue
he shouldn't prevalue
we shouldn't prevalue
you shouldn't prevalue
they shouldn't prevalue 	I shouldn't be prevaluing
you shouldn't be prevaluing
he shouldn't be prevaluing
we shouldn't be prevaluing
you shouldn't be prevaluing
they shouldn't be prevaluing	I shouldn't have prevalued
you shouldn't have prevalued
he shouldn't have prevalued
we shouldn't have prevalued
you shouldn't have prevalued
they shouldn't have prevalued	I shouldn't have been prevaluing
you shouldn't have been prevaluing
he shouldn't have been prevaluing
we shouldn't have been prevaluing
you shouldn't have been prevaluing
they shouldn't have been prevaluing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I prevalue?
should you prevalue?
should he prevalue?
should we prevalue?
should you prevalue?
should they prevalue? 	should I be prevaluing?
should you be prevaluing?
should he be prevaluing?
should we be prevaluing?
should you be prevaluing?
should they be prevaluing? 	should I have prevalued?
should you have prevalued?
should he have prevalued?
should we have prevalued?
should you have prevalued?
should they have prevalued? 	should I have been prevaluing?
should you have been prevaluing?
should he have been prevaluing?
should we have been prevaluing?
should you have been prevaluing?
should they have been prevaluing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I prevalue?
shouldn't you prevalue?
shouldn't he prevalue?
shouldn't we prevalue?
shouldn't you prevalue?
shouldn't they prevalue? 	shouldn't I be prevaluing?
shouldn't you be prevaluing?
shouldn't he be prevaluing?
shouldn't we be prevaluing?
shouldn't you be prevaluing?
shouldn't they be prevaluing? 	shouldn't I have prevalued?
shouldn't you have prevalued?
shouldn't he have prevalued?
shouldn't we have prevalued?
shouldn't you have prevalued?
shouldn't they have prevalued? 	shouldn't I have been prevaluing?
shouldn't you have been prevaluing?
shouldn't he have been prevaluing?
shouldn't we have been prevaluing?
shouldn't you have been prevaluing?
shouldn't they have been prevaluing?