English verb conjugation
SHOULD TREPAN

Regular verb: trepan - trepanned - trepanned

Affirmation

Simple form	V-ing form
I should trepan you should trepan he should trepan we should trepan you should trepan they should trepan	I should be trepanning you should be trepanning he should be trepanning we should be trepanning you should be trepanning they should be trepanning
Perfect	V-ing perfect
I should have trepanned you should have trepanned he should have trepanned we should have trepanned you should have trepanned they should have trepanned	I should have been trepanning you should have been trepanning he should have been trepanning we should have been trepanning you should have been trepanning they should have been trepanning

Negation

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

Interrogative form

Simple form	V-ing form
should I trepan? should you trepan? should he trepan? should we trepan? should you trepan? should they trepan?	should I be trepanning? should you be trepanning? should he be trepanning? should we be trepanning? should you be trepanning? should they be trepanning?
Perfect	V-ing perfect
should I have trepanned? should you have trepanned? should he have trepanned? should we have trepanned? should you have trepanned? should they have trepanned?	should I have been trepanning? should you have been trepanning? should he have been trepanning? should we have been trepanning? should you have been trepanning? should they have been trepanning?

Interro-negative form

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