should exist
Verbe régulier : exist - existed- existed
Traduction française : exister 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I should exist
you should exist
she should exist
we should exist
you should exist
they should exist 	I should be existing
you should be existing
she should be existing
we should be existing
you should be existing
they should be existing	I should have existed
you should have existed
she should have existed
we should have existed
you should have existed
they should have existed	I should have been existing
you should have been existing
she should have been existing
we should have been existing
you should have been existing
they should have been existing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I should not exist
you should not exist
she should not exist
we should not exist
you should not exist
they should not exist 	I should not be existing
you should not be existing
she should not be existing
we should not be existing
you should not be existing
they should not be existing	I should not have existed
you should not have existed
she should not have existed
we should not have existed
you should not have existed
they should not have existed	I should not have been existing
you should not have been existing
she should not have been existing
we should not have been existing
you should not have been existing
they should not have been existing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
should I exist?
should you exist?
should she exist?
should we exist?
should you exist?
should they exist? 	should I be existing?
should you be existing?
should she be existing?
should we be existing?
should you be existing?
should they be existing? 	should I have existed?
should you have existed?
should she have existed?
should we have existed?
should you have existed?
should they have existed? 	should I have been existing?
should you have been existing?
should she have been existing?
should we have been existing?
should you have been existing?
should they have been existing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
should I not exist?
should you not exist?
should she not exist?
should we not exist?
should you not exist?
should they not exist? 	should I not be existing?
should you not be existing?
should she not be existing?
should we not be existing?
should you not be existing?
should they not be existing? 	should I not have existed?
should you not have existed?
should she not have existed?
should we not have existed?
should you not have existed?
should they not have existed? 	should I not have been existing?
should you not have been existing?
should she not have been existing?
should we not have been existing?
should you not have been existing?
should they not have been existing?