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