English verb conjugation
OUGHT TO DECUPLE

Regular verb: decuple - decupled - decupled

Affirmation

Simple form	V-ing form
I ought to decuple you ought to decuple she ought to decuple we ought to decuple you ought to decuple they ought to decuple	I ought to be decupling you ought to be decupling she ought to be decupling we ought to be decupling you ought to be decupling they ought to be decupling
Perfect	V-ing perfect
I ought to have decupled you ought to have decupled she ought to have decupled we ought to have decupled you ought to have decupled they ought to have decupled	I ought to have been decupling you ought to have been decupling she ought to have been decupling we ought to have been decupling you ought to have been decupling they ought to have been decupling

Negation

Simple form	V-ing form
I oughtn't to decuple you oughtn't to decuple she oughtn't to decuple we oughtn't to decuple you oughtn't to decuple they oughtn't to decuple	I oughtn't to be decupling you oughtn't to be decupling she oughtn't to be decupling we oughtn't to be decupling you oughtn't to be decupling they oughtn't to be decupling
Perfect	V-ing perfect
I oughtn't to have decupled you oughtn't to have decupled she oughtn't to have decupled we oughtn't to have decupled you oughtn't to have decupled they oughtn't to have decupled	I oughtn't to have been decupling you oughtn't to have been decupling she oughtn't to have been decupling we oughtn't to have been decupling you oughtn't to have been decupling they oughtn't to have been decupling

Interrogative form

Simple form	V-ing form
ought to I decuple? ought to you decuple? ought to she decuple? ought to we decuple? ought to you decuple? ought to they decuple?	ought to I be decupling? ought to you be decupling? ought to she be decupling? ought to we be decupling? ought to you be decupling? ought to they be decupling?
Perfect	V-ing perfect
ought to I have decupled? ought to you have decupled? ought to she have decupled? ought to we have decupled? ought to you have decupled? ought to they have decupled?	ought to I have been decupling? ought to you have been decupling? ought to she have been decupling? ought to we have been decupling? ought to you have been decupling? ought to they have been decupling?

Interro-negative form

Simple form	V-ing form
oughtn't I to decuple? oughtn't you to decuple? oughtn't she to decuple? oughtn't we to decuple? oughtn't you to decuple? oughtn't they to decuple?	oughtn't I to be decupling? oughtn't you to be decupling? oughtn't she to be decupling? oughtn't we to be decupling? oughtn't you to be decupling? oughtn't they to be decupling?
Perfect	V-ing perfect
oughtn't I to have decupled? oughtn't you to have decupled? oughtn't she to have decupled? oughtn't we to have decupled? oughtn't you to have decupled? oughtn't they to have decupled?	oughtn't I to have been decupling? oughtn't you to have been decupling? oughtn't she to have been decupling? oughtn't we to have been decupling? oughtn't you to have been decupling? oughtn't they to have been decupling?