English verb conjugation
OUGHT TO CONTRIVE

Regular verb: contrive - contrived - contrived

Affirmation

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