should preboard
Verbe régulier : preboard - preboarded- preboarded

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I'd preboard
you'd preboard
she'd preboard
we'd preboard
you'd preboard
they'd preboard 	I'd be preboarding
you'd be preboarding
she'd be preboarding
we'd be preboarding
you'd be preboarding
they'd be preboarding	I should've preboarded
you should've preboarded
she should've preboarded
we should've preboarded
you should've preboarded
they should've preboarded	I should've been preboarding
you should've been preboarding
she should've been preboarding
we should've been preboarding
you should've been preboarding
they should've been preboarding	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I shouldn't preboard
you shouldn't preboard
she shouldn't preboard
we shouldn't preboard
you shouldn't preboard
they shouldn't preboard 	I shouldn't be preboarding
you shouldn't be preboarding
she shouldn't be preboarding
we shouldn't be preboarding
you shouldn't be preboarding
they shouldn't be preboarding	I shouldn't have preboarded
you shouldn't have preboarded
she shouldn't have preboarded
we shouldn't have preboarded
you shouldn't have preboarded
they shouldn't have preboarded	I shouldn't have been preboarding
you shouldn't have been preboarding
she shouldn't have been preboarding
we shouldn't have been preboarding
you shouldn't have been preboarding
they shouldn't have been preboarding	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
should I preboard?
should you preboard?
should she preboard?
should we preboard?
should you preboard?
should they preboard? 	should I be preboarding?
should you be preboarding?
should she be preboarding?
should we be preboarding?
should you be preboarding?
should they be preboarding? 	should I have preboarded?
should you have preboarded?
should she have preboarded?
should we have preboarded?
should you have preboarded?
should they have preboarded? 	should I have been preboarding?
should you have been preboarding?
should she have been preboarding?
should we have been preboarding?
should you have been preboarding?
should they have been preboarding? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
shouldn't I preboard?
shouldn't you preboard?
shouldn't she preboard?
shouldn't we preboard?
shouldn't you preboard?
shouldn't they preboard? 	shouldn't I be preboarding?
shouldn't you be preboarding?
shouldn't she be preboarding?
shouldn't we be preboarding?
shouldn't you be preboarding?
shouldn't they be preboarding? 	shouldn't I have preboarded?
shouldn't you have preboarded?
shouldn't she have preboarded?
shouldn't we have preboarded?
shouldn't you have preboarded?
shouldn't they have preboarded? 	shouldn't I have been preboarding?
shouldn't you have been preboarding?
shouldn't she have been preboarding?
shouldn't we have been preboarding?
shouldn't you have been preboarding?
shouldn't they have been preboarding?