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