ought to decuple
Regular verb: decuple - decupled- decupled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?