should undersign
Verbe régulier : undersign - undersigned- undersigned

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I'd undersign
you'd undersign
she'd undersign
we'd undersign
you'd undersign
they'd undersign 	I'd be undersigning
you'd be undersigning
she'd be undersigning
we'd be undersigning
you'd be undersigning
they'd be undersigning	I should've undersigned
you should've undersigned
she should've undersigned
we should've undersigned
you should've undersigned
they should've undersigned	I should've been undersigning
you should've been undersigning
she should've been undersigning
we should've been undersigning
you should've been undersigning
they should've been undersigning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I shouldn't undersign
you shouldn't undersign
she shouldn't undersign
we shouldn't undersign
you shouldn't undersign
they shouldn't undersign 	I shouldn't be undersigning
you shouldn't be undersigning
she shouldn't be undersigning
we shouldn't be undersigning
you shouldn't be undersigning
they shouldn't be undersigning	I shouldn't have undersigned
you shouldn't have undersigned
she shouldn't have undersigned
we shouldn't have undersigned
you shouldn't have undersigned
they shouldn't have undersigned	I shouldn't have been undersigning
you shouldn't have been undersigning
she shouldn't have been undersigning
we shouldn't have been undersigning
you shouldn't have been undersigning
they shouldn't have been undersigning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
should I undersign?
should you undersign?
should she undersign?
should we undersign?
should you undersign?
should they undersign? 	should I be undersigning?
should you be undersigning?
should she be undersigning?
should we be undersigning?
should you be undersigning?
should they be undersigning? 	should I have undersigned?
should you have undersigned?
should she have undersigned?
should we have undersigned?
should you have undersigned?
should they have undersigned? 	should I have been undersigning?
should you have been undersigning?
should she have been undersigning?
should we have been undersigning?
should you have been undersigning?
should they have been undersigning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
shouldn't I undersign?
shouldn't you undersign?
shouldn't she undersign?
shouldn't we undersign?
shouldn't you undersign?
shouldn't they undersign? 	shouldn't I be undersigning?
shouldn't you be undersigning?
shouldn't she be undersigning?
shouldn't we be undersigning?
shouldn't you be undersigning?
shouldn't they be undersigning? 	shouldn't I have undersigned?
shouldn't you have undersigned?
shouldn't she have undersigned?
shouldn't we have undersigned?
shouldn't you have undersigned?
shouldn't they have undersigned? 	shouldn't I have been undersigning?
shouldn't you have been undersigning?
shouldn't she have been undersigning?
shouldn't we have been undersigning?
shouldn't you have been undersigning?
shouldn't they have been undersigning?