I ought to backsolve you ought to backsolve she ought to backsolve we ought to backsolve you ought to backsolve they ought to backsolve
V-ing form
I ought to be backsolving you ought to be backsolving she ought to be backsolving we ought to be backsolving you ought to be backsolving they ought to be backsolving
Perfect
I ought to have backsolved you ought to have backsolved she ought to have backsolved we ought to have backsolved you ought to have backsolved they ought to have backsolved
V-ing perfect
I ought to have been backsolving you ought to have been backsolving she ought to have been backsolving we ought to have been backsolving you ought to have been backsolving they ought to have been backsolving
Negation
Simple form
I oughtn't to backsolve you oughtn't to backsolve she oughtn't to backsolve we oughtn't to backsolve you oughtn't to backsolve they oughtn't to backsolve
V-ing form
I oughtn't to be backsolving you oughtn't to be backsolving she oughtn't to be backsolving we oughtn't to be backsolving you oughtn't to be backsolving they oughtn't to be backsolving
Perfect
I oughtn't to have backsolved you oughtn't to have backsolved she oughtn't to have backsolved we oughtn't to have backsolved you oughtn't to have backsolved they oughtn't to have backsolved
V-ing perfect
I oughtn't to have been backsolving you oughtn't to have been backsolving she oughtn't to have been backsolving we oughtn't to have been backsolving you oughtn't to have been backsolving they oughtn't to have been backsolving
Interrogative form
Simple form
ought to I backsolve? ought to you backsolve? ought to she backsolve? ought to we backsolve? ought to you backsolve? ought to they backsolve?
V-ing form
ought to I be backsolving? ought to you be backsolving? ought to she be backsolving? ought to we be backsolving? ought to you be backsolving? ought to they be backsolving?
Perfect
ought to I have backsolved? ought to you have backsolved? ought to she have backsolved? ought to we have backsolved? ought to you have backsolved? ought to they have backsolved?
V-ing perfect
ought to I have been backsolving? ought to you have been backsolving? ought to she have been backsolving? ought to we have been backsolving? ought to you have been backsolving? ought to they have been backsolving?
Interro-negative form
Simple form
oughtn't I to backsolve? oughtn't you to backsolve? oughtn't she to backsolve? oughtn't we to backsolve? oughtn't you to backsolve? oughtn't they to backsolve?
V-ing form
oughtn't I to be backsolving? oughtn't you to be backsolving? oughtn't she to be backsolving? oughtn't we to be backsolving? oughtn't you to be backsolving? oughtn't they to be backsolving?
Perfect
oughtn't I to have backsolved? oughtn't you to have backsolved? oughtn't she to have backsolved? oughtn't we to have backsolved? oughtn't you to have backsolved? oughtn't they to have backsolved?
V-ing perfect
oughtn't I to have been backsolving? oughtn't you to have been backsolving? oughtn't she to have been backsolving? oughtn't we to have been backsolving? oughtn't you to have been backsolving? oughtn't they to have been backsolving?