English verb conjugation
OUGHT TO TREPAN

Regular verb: trepan - trepanned - trepanned

Affirmation

Simple form	V-ing form
I ought to trepan you ought to trepan she ought to trepan we ought to trepan you ought to trepan they ought to trepan	I ought to be trepanning you ought to be trepanning she ought to be trepanning we ought to be trepanning you ought to be trepanning they ought to be trepanning
Perfect	V-ing perfect
I ought to have trepanned you ought to have trepanned she ought to have trepanned we ought to have trepanned you ought to have trepanned they ought to have trepanned	I ought to have been trepanning you ought to have been trepanning she ought to have been trepanning we ought to have been trepanning you ought to have been trepanning they ought to have been trepanning

Negation

Simple form	V-ing form
I oughtn't to trepan you oughtn't to trepan she oughtn't to trepan we oughtn't to trepan you oughtn't to trepan they oughtn't to trepan	I oughtn't to be trepanning you oughtn't to be trepanning she oughtn't to be trepanning we oughtn't to be trepanning you oughtn't to be trepanning they oughtn't to be trepanning
Perfect	V-ing perfect
I oughtn't to have trepanned you oughtn't to have trepanned she oughtn't to have trepanned we oughtn't to have trepanned you oughtn't to have trepanned they oughtn't to have trepanned	I oughtn't to have been trepanning you oughtn't to have been trepanning she oughtn't to have been trepanning we oughtn't to have been trepanning you oughtn't to have been trepanning they oughtn't to have been trepanning

Interrogative form

Simple form	V-ing form
ought to I trepan? ought to you trepan? ought to she trepan? ought to we trepan? ought to you trepan? ought to they trepan?	ought to I be trepanning? ought to you be trepanning? ought to she be trepanning? ought to we be trepanning? ought to you be trepanning? ought to they be trepanning?
Perfect	V-ing perfect
ought to I have trepanned? ought to you have trepanned? ought to she have trepanned? ought to we have trepanned? ought to you have trepanned? ought to they have trepanned?	ought to I have been trepanning? ought to you have been trepanning? ought to she have been trepanning? ought to we have been trepanning? ought to you have been trepanning? ought to they have been trepanning?

Interro-negative form

Simple form	V-ing form
oughtn't I to trepan? oughtn't you to trepan? oughtn't she to trepan? oughtn't we to trepan? oughtn't you to trepan? oughtn't they to trepan?	oughtn't I to be trepanning? oughtn't you to be trepanning? oughtn't she to be trepanning? oughtn't we to be trepanning? oughtn't you to be trepanning? oughtn't they to be trepanning?
Perfect	V-ing perfect
oughtn't I to have trepanned? oughtn't you to have trepanned? oughtn't she to have trepanned? oughtn't we to have trepanned? oughtn't you to have trepanned? oughtn't they to have trepanned?	oughtn't I to have been trepanning? oughtn't you to have been trepanning? oughtn't she to have been trepanning? oughtn't we to have been trepanning? oughtn't you to have been trepanning? oughtn't they to have been trepanning?