ought to cumulate
Regular verb: cumulate - cumulated- cumulated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to cumulate
you ought to cumulate
she ought to cumulate
we ought to cumulate
you ought to cumulate
they ought to cumulate 	I ought to be cumulating
you ought to be cumulating
she ought to be cumulating
we ought to be cumulating
you ought to be cumulating
they ought to be cumulating	I ought to have cumulated
you ought to have cumulated
she ought to have cumulated
we ought to have cumulated
you ought to have cumulated
they ought to have cumulated	I ought to have been cumulating
you ought to have been cumulating
she ought to have been cumulating
we ought to have been cumulating
you ought to have been cumulating
they ought to have been cumulating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to cumulate
you oughtn't to cumulate
she oughtn't to cumulate
we oughtn't to cumulate
you oughtn't to cumulate
they oughtn't to cumulate 	I oughtn't to be cumulating
you oughtn't to be cumulating
she oughtn't to be cumulating
we oughtn't to be cumulating
you oughtn't to be cumulating
they oughtn't to be cumulating	I oughtn't to have cumulated
you oughtn't to have cumulated
she oughtn't to have cumulated
we oughtn't to have cumulated
you oughtn't to have cumulated
they oughtn't to have cumulated	I oughtn't to have been cumulating
you oughtn't to have been cumulating
she oughtn't to have been cumulating
we oughtn't to have been cumulating
you oughtn't to have been cumulating
they oughtn't to have been cumulating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I cumulate?
ought to you cumulate?
ought to she cumulate?
ought to we cumulate?
ought to you cumulate?
ought to they cumulate? 	ought to I be cumulating?
ought to you be cumulating?
ought to she be cumulating?
ought to we be cumulating?
ought to you be cumulating?
ought to they be cumulating? 	ought to I have cumulated?
ought to you have cumulated?
ought to she have cumulated?
ought to we have cumulated?
ought to you have cumulated?
ought to they have cumulated? 	ought to I have been cumulating?
ought to you have been cumulating?
ought to she have been cumulating?
ought to we have been cumulating?
ought to you have been cumulating?
ought to they have been cumulating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to cumulate?
oughtn't you to cumulate?
oughtn't she to cumulate?
oughtn't we to cumulate?
oughtn't you to cumulate?
oughtn't they to cumulate? 	oughtn't I to be cumulating?
oughtn't you to be cumulating?
oughtn't she to be cumulating?
oughtn't we to be cumulating?
oughtn't you to be cumulating?
oughtn't they to be cumulating? 	oughtn't I to have cumulated?
oughtn't you to have cumulated?
oughtn't she to have cumulated?
oughtn't we to have cumulated?
oughtn't you to have cumulated?
oughtn't they to have cumulated? 	oughtn't I to have been cumulating?
oughtn't you to have been cumulating?
oughtn't she to have been cumulating?
oughtn't we to have been cumulating?
oughtn't you to have been cumulating?
oughtn't they to have been cumulating?