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 he 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 he 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 he 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 he 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 ought not to trepan you ought not to trepan he ought not to trepan we ought not to trepan you ought not to trepan they ought not to trepan	I ought not to trepanning you ought not to trepanning he ought not to trepanning we ought not to trepanning you ought not to trepanning they ought not to trepanning
Perfect	V-ing perfect
I ought not to have trepanned you ought not to have trepanned he ought not to have trepanned we ought not to have trepanned you ought not to have trepanned they ought not to have trepanned	I ought not to have been trepanning you ought not to have been trepanning he ought not to have been trepanning we ought not to have been trepanning you ought not to have been trepanning they ought not to have been trepanning

Interrogative form

Simple form	V-ing form
ought to I trepan? ought to you trepan? ought to he 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 he 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 he 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 he 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
ought I not to trepan? ought you not to trepan? ought he not to trepan? ought we not to trepan? ought you not to trepan? ought they not to trepan?	ought I not to be trepanning? ought you not to be trepanning? ought he not to be trepanning? ought we not to be trepanning? ought you not to be trepanning? ought they not to be trepanning?
Perfect	V-ing perfect
ought I not to have trepanned? ought you not to have trepanned? ought he not to have trepanned? ought we not to have trepanned? ought you not to have trepanned? ought they not to have trepanned?	ought I not to have been trepanning? ought you not to have been trepanning? ought he not to have been trepanning? ought we not to have been trepanning? ought you not to have been trepanning? ought they not to have been trepanning?