I ought to solve you ought to solve he ought to solve we ought to solve you ought to solve they ought to solve
V-ing form
I ought to be solving you ought to be solving he ought to be solving we ought to be solving you ought to be solving they ought to be solving
Perfect
I ought to have solved you ought to have solved he ought to have solved we ought to have solved you ought to have solved they ought to have solved
V-ing perfect
I ought to have been solving you ought to have been solving he ought to have been solving we ought to have been solving you ought to have been solving they ought to have been solving
Negation
Simple form
I oughtn't to solve you oughtn't to solve he oughtn't to solve we oughtn't to solve you oughtn't to solve they oughtn't to solve
V-ing form
I oughtn't to be solving you oughtn't to be solving he oughtn't to be solving we oughtn't to be solving you oughtn't to be solving they oughtn't to be solving
Perfect
I oughtn't to have solved you oughtn't to have solved he oughtn't to have solved we oughtn't to have solved you oughtn't to have solved they oughtn't to have solved
V-ing perfect
I oughtn't to have been solving you oughtn't to have been solving he oughtn't to have been solving we oughtn't to have been solving you oughtn't to have been solving they oughtn't to have been solving
Interrogative form
Simple form
ought to I solve? ought to you solve? ought to he solve? ought to we solve? ought to you solve? ought to they solve?
V-ing form
ought to I be solving? ought to you be solving? ought to he be solving? ought to we be solving? ought to you be solving? ought to they be solving?
Perfect
ought to I have solved? ought to you have solved? ought to he have solved? ought to we have solved? ought to you have solved? ought to they have solved?
V-ing perfect
ought to I have been solving? ought to you have been solving? ought to he have been solving? ought to we have been solving? ought to you have been solving? ought to they have been solving?
Interro-negative form
Simple form
oughtn't I to solve? oughtn't you to solve? oughtn't he to solve? oughtn't we to solve? oughtn't you to solve? oughtn't they to solve?
V-ing form
oughtn't I to be solving? oughtn't you to be solving? oughtn't he to be solving? oughtn't we to be solving? oughtn't you to be solving? oughtn't they to be solving?
Perfect
oughtn't I to have solved? oughtn't you to have solved? oughtn't he to have solved? oughtn't we to have solved? oughtn't you to have solved? oughtn't they to have solved?
V-ing perfect
oughtn't I to have been solving? oughtn't you to have been solving? oughtn't he to have been solving? oughtn't we to have been solving? oughtn't you to have been solving? oughtn't they to have been solving?