should undersign
Verbe régulier : undersign - undersigned- undersigned

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I should undersign
you should undersign
he should undersign
we should undersign
you should undersign
they should undersign 	I should be undersigning
you should be undersigning
he should be undersigning
we should be undersigning
you should be undersigning
they should be undersigning	I should have undersigned
you should have undersigned
he should have undersigned
we should have undersigned
you should have undersigned
they should have undersigned	I should have been undersigning
you should have been undersigning
he should have been undersigning
we should have been undersigning
you should have been undersigning
they should have been undersigning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I should not undersign
you should not undersign
he should not undersign
we should not undersign
you should not undersign
they should not undersign 	I should not be undersigning
you should not be undersigning
he should not be undersigning
we should not be undersigning
you should not be undersigning
they should not be undersigning	I should not have undersigned
you should not have undersigned
he should not have undersigned
we should not have undersigned
you should not have undersigned
they should not have undersigned	I should not have been undersigning
you should not have been undersigning
he should not have been undersigning
we should not have been undersigning
you should not have been undersigning
they should not have been undersigning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
should I undersign?
should you undersign?
should he undersign?
should we undersign?
should you undersign?
should they undersign? 	should I be undersigning?
should you be undersigning?
should he be undersigning?
should we be undersigning?
should you be undersigning?
should they be undersigning? 	should I have undersigned?
should you have undersigned?
should he 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 he 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 	
should I not undersign?
should you not undersign?
should he not undersign?
should we not undersign?
should you not undersign?
should they not undersign? 	should I not be undersigning?
should you not be undersigning?
should he not be undersigning?
should we not be undersigning?
should you not be undersigning?
should they not be undersigning? 	should I not have undersigned?
should you not have undersigned?
should he not have undersigned?
should we not have undersigned?
should you not have undersigned?
should they not have undersigned? 	should I not have been undersigning?
should you not have been undersigning?
should he not have been undersigning?
should we not have been undersigning?
should you not have been undersigning?
should they not have been undersigning?