ought to combine
Regular verb: combine - combined- combined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to combine
you ought to combine
he ought to combine
we ought to combine
you ought to combine
they ought to combine 	I ought to be combining
you ought to be combining
he ought to be combining
we ought to be combining
you ought to be combining
they ought to be combining	I ought to have combined
you ought to have combined
he ought to have combined
we ought to have combined
you ought to have combined
they ought to have combined	I ought to have been combining
you ought to have been combining
he ought to have been combining
we ought to have been combining
you ought to have been combining
they ought to have been combining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to combine
you oughtn't to combine
he oughtn't to combine
we oughtn't to combine
you oughtn't to combine
they oughtn't to combine 	I oughtn't to be combining
you oughtn't to be combining
he oughtn't to be combining
we oughtn't to be combining
you oughtn't to be combining
they oughtn't to be combining	I oughtn't to have combined
you oughtn't to have combined
he oughtn't to have combined
we oughtn't to have combined
you oughtn't to have combined
they oughtn't to have combined	I oughtn't to have been combining
you oughtn't to have been combining
he oughtn't to have been combining
we oughtn't to have been combining
you oughtn't to have been combining
they oughtn't to have been combining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I combine?
ought to you combine?
ought to he combine?
ought to we combine?
ought to you combine?
ought to they combine? 	ought to I be combining?
ought to you be combining?
ought to he be combining?
ought to we be combining?
ought to you be combining?
ought to they be combining? 	ought to I have combined?
ought to you have combined?
ought to he have combined?
ought to we have combined?
ought to you have combined?
ought to they have combined? 	ought to I have been combining?
ought to you have been combining?
ought to he have been combining?
ought to we have been combining?
ought to you have been combining?
ought to they have been combining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to combine?
oughtn't you to combine?
oughtn't he to combine?
oughtn't we to combine?
oughtn't you to combine?
oughtn't they to combine? 	oughtn't I to be combining?
oughtn't you to be combining?
oughtn't he to be combining?
oughtn't we to be combining?
oughtn't you to be combining?
oughtn't they to be combining? 	oughtn't I to have combined?
oughtn't you to have combined?
oughtn't he to have combined?
oughtn't we to have combined?
oughtn't you to have combined?
oughtn't they to have combined? 	oughtn't I to have been combining?
oughtn't you to have been combining?
oughtn't he to have been combining?
oughtn't we to have been combining?
oughtn't you to have been combining?
oughtn't they to have been combining?