English verb conjugation
SHOULD TREPAN

Regular verb: trepan - trepanned - trepanned

Affirmation

Simple form	V-ing form
I'd trepan you'd trepan she'd trepan we'd trepan you'd trepan they'd trepan	I'd be trepanning you'd be trepanning she'd be trepanning we'd be trepanning you'd be trepanning they'd be trepanning
Perfect	V-ing perfect
I should've trepanned you should've trepanned she should've trepanned we should've trepanned you should've trepanned they should've trepanned	I should've been trepanning you should've been trepanning she should've been trepanning we should've been trepanning you should've been trepanning they should've been trepanning

Negation

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

Interrogative form

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