should exist
Verbo regular: exist - existed- existed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should exist
you should exist
he should exist
we should exist
you should exist
they should exist 	I should be existing
you should be existing
he should be existing
we should be existing
you should be existing
they should be existing	I should have existed
you should have existed
he 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
he should have been existing
we should have been existing
you should have been existing
they should have been existing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not exist
you should not exist
he 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
he 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
he 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
he should not have been existing
we should not have been existing
you should not have been existing
they should not have been existing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I exist?
should you exist?
should he exist?
should we exist?
should you exist?
should they exist? 	should I be existing?
should you be existing?
should he be existing?
should we be existing?
should you be existing?
should they be existing? 	should I have existed?
should you have existed?
should he 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 he have been existing?
should we have been existing?
should you have been existing?
should they have been existing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not exist?
should you not exist?
should he 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 he 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 he 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 he not have been existing?
should we not have been existing?
should you not have been existing?
should they not have been existing?