I ought to backfit you ought to backfit she ought to backfit we ought to backfit you ought to backfit they ought to backfit
V-ing form
I ought to be backfiting you ought to be backfiting she ought to be backfiting we ought to be backfiting you ought to be backfiting they ought to be backfiting
Perfect
I ought to have backfit, backfitted you ought to have backfit, backfitted she ought to have backfit, backfitted we ought to have backfit, backfitted you ought to have backfit, backfitted they ought to have backfit, backfitted
V-ing perfect
I ought to have been backfiting you ought to have been backfiting she ought to have been backfiting we ought to have been backfiting you ought to have been backfiting they ought to have been backfiting
Negation
Simple form
I oughtn't to backfit you oughtn't to backfit she oughtn't to backfit we oughtn't to backfit you oughtn't to backfit they oughtn't to backfit
V-ing form
I oughtn't to be backfiting you oughtn't to be backfiting she oughtn't to be backfiting we oughtn't to be backfiting you oughtn't to be backfiting they oughtn't to be backfiting
Perfect
I oughtn't to have backfit, backfitted you oughtn't to have backfit, backfitted she oughtn't to have backfit, backfitted we oughtn't to have backfit, backfitted you oughtn't to have backfit, backfitted they oughtn't to have backfit, backfitted
V-ing perfect
I oughtn't to have been backfiting you oughtn't to have been backfiting she oughtn't to have been backfiting we oughtn't to have been backfiting you oughtn't to have been backfiting they oughtn't to have been backfiting
Interrogative form
Simple form
ought to I backfit? ought to you backfit? ought to she backfit? ought to we backfit? ought to you backfit? ought to they backfit?
V-ing form
ought to I be backfiting? ought to you be backfiting? ought to she be backfiting? ought to we be backfiting? ought to you be backfiting? ought to they be backfiting?
Perfect
ought to I have backfit, backfitted? ought to you have backfit, backfitted? ought to she have backfit, backfitted? ought to we have backfit, backfitted? ought to you have backfit, backfitted? ought to they have backfit, backfitted?
V-ing perfect
ought to I have been backfiting? ought to you have been backfiting? ought to she have been backfiting? ought to we have been backfiting? ought to you have been backfiting? ought to they have been backfiting?
Interro-negative form
Simple form
oughtn't I to backfit? oughtn't you to backfit? oughtn't she to backfit? oughtn't we to backfit? oughtn't you to backfit? oughtn't they to backfit?
V-ing form
oughtn't I to be backfiting? oughtn't you to be backfiting? oughtn't she to be backfiting? oughtn't we to be backfiting? oughtn't you to be backfiting? oughtn't they to be backfiting?
Perfect
oughtn't I to have backfit, backfitted? oughtn't you to have backfit, backfitted? oughtn't she to have backfit, backfitted? oughtn't we to have backfit, backfitted? oughtn't you to have backfit, backfitted? oughtn't they to have backfit, backfitted?
V-ing perfect
oughtn't I to have been backfiting? oughtn't you to have been backfiting? oughtn't she to have been backfiting? oughtn't we to have been backfiting? oughtn't you to have been backfiting? oughtn't they to have been backfiting?