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
she 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
she 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
she 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
she 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 ought not to combine
you ought not to combine
she ought not to combine
we ought not to combine
you ought not to combine
they ought not to combine 	I ought not to combining
you ought not to combining
she ought not to combining
we ought not to combining
you ought not to combining
they ought not to combining	I ought not to have combined
you ought not to have combined
she ought not to have combined
we ought not to have combined
you ought not to have combined
they ought not to have combined	I ought not to have been combining
you ought not to have been combining
she ought not to have been combining
we ought not to have been combining
you ought not to have been combining
they ought not 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 she 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 she 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 she 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 she 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 	
ought I not to combine?
ought you not to combine?
ought she not to combine?
ought we not to combine?
ought you not to combine?
ought they not to combine? 	ought I not to be combining?
ought you not to be combining?
ought she not to be combining?
ought we not to be combining?
ought you not to be combining?
ought they not to be combining? 	ought I not to have combined?
ought you not to have combined?
ought she not to have combined?
ought we not to have combined?
ought you not to have combined?
ought they not to have combined? 	ought I not to have been combining?
ought you not to have been combining?
ought she not to have been combining?
ought we not to have been combining?
ought you not to have been combining?
ought they not to have been combining?