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