ought to contrive
Regular verb: contrive - contrived- contrived

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to contrive
you ought to contrive
he ought to contrive
we ought to contrive
you ought to contrive
they ought to contrive 	I ought to be contriving
you ought to be contriving
he ought to be contriving
we ought to be contriving
you ought to be contriving
they ought to be contriving	I ought to have contrived
you ought to have contrived
he ought to have contrived
we ought to have contrived
you ought to have contrived
they ought to have contrived	I ought to have been contriving
you ought to have been contriving
he ought to have been contriving
we ought to have been contriving
you ought to have been contriving
they ought to have been contriving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to contrive
you oughtn't to contrive
he oughtn't to contrive
we oughtn't to contrive
you oughtn't to contrive
they oughtn't to contrive 	I oughtn't to be contriving
you oughtn't to be contriving
he oughtn't to be contriving
we oughtn't to be contriving
you oughtn't to be contriving
they oughtn't to be contriving	I oughtn't to have contrived
you oughtn't to have contrived
he oughtn't to have contrived
we oughtn't to have contrived
you oughtn't to have contrived
they oughtn't to have contrived	I oughtn't to have been contriving
you oughtn't to have been contriving
he oughtn't to have been contriving
we oughtn't to have been contriving
you oughtn't to have been contriving
they oughtn't to have been contriving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I contrive?
ought to you contrive?
ought to he contrive?
ought to we contrive?
ought to you contrive?
ought to they contrive? 	ought to I be contriving?
ought to you be contriving?
ought to he be contriving?
ought to we be contriving?
ought to you be contriving?
ought to they be contriving? 	ought to I have contrived?
ought to you have contrived?
ought to he have contrived?
ought to we have contrived?
ought to you have contrived?
ought to they have contrived? 	ought to I have been contriving?
ought to you have been contriving?
ought to he have been contriving?
ought to we have been contriving?
ought to you have been contriving?
ought to they have been contriving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to contrive?
oughtn't you to contrive?
oughtn't he to contrive?
oughtn't we to contrive?
oughtn't you to contrive?
oughtn't they to contrive? 	oughtn't I to be contriving?
oughtn't you to be contriving?
oughtn't he to be contriving?
oughtn't we to be contriving?
oughtn't you to be contriving?
oughtn't they to be contriving? 	oughtn't I to have contrived?
oughtn't you to have contrived?
oughtn't he to have contrived?
oughtn't we to have contrived?
oughtn't you to have contrived?
oughtn't they to have contrived? 	oughtn't I to have been contriving?
oughtn't you to have been contriving?
oughtn't he to have been contriving?
oughtn't we to have been contriving?
oughtn't you to have been contriving?
oughtn't they to have been contriving?