should trepan
Regular verb: trepan - trepanned- trepanned

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