ought to prevalue
Regular verb: prevalue - prevalued- prevalued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to prevalue
you ought to prevalue
he ought to prevalue
we ought to prevalue
you ought to prevalue
they ought to prevalue 	I ought to be prevaluing
you ought to be prevaluing
he ought to be prevaluing
we ought to be prevaluing
you ought to be prevaluing
they ought to be prevaluing	I ought to have prevalued
you ought to have prevalued
he ought to have prevalued
we ought to have prevalued
you ought to have prevalued
they ought to have prevalued	I ought to have been prevaluing
you ought to have been prevaluing
he ought to have been prevaluing
we ought to have been prevaluing
you ought to have been prevaluing
they ought to have been prevaluing	

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

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

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