should underperform
Verbo regular: underperform - underperformed- underperformed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should underperform
you should underperform
he should underperform
we should underperform
you should underperform
they should underperform 	I should be underperforming
you should be underperforming
he should be underperforming
we should be underperforming
you should be underperforming
they should be underperforming	I should have underperformed
you should have underperformed
he should have underperformed
we should have underperformed
you should have underperformed
they should have underperformed	I should have been underperforming
you should have been underperforming
he should have been underperforming
we should have been underperforming
you should have been underperforming
they should have been underperforming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not underperform
you should not underperform
he should not underperform
we should not underperform
you should not underperform
they should not underperform 	I should not be underperforming
you should not be underperforming
he should not be underperforming
we should not be underperforming
you should not be underperforming
they should not be underperforming	I should not have underperformed
you should not have underperformed
he should not have underperformed
we should not have underperformed
you should not have underperformed
they should not have underperformed	I should not have been underperforming
you should not have been underperforming
he should not have been underperforming
we should not have been underperforming
you should not have been underperforming
they should not have been underperforming	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I underperform?
should you underperform?
should he underperform?
should we underperform?
should you underperform?
should they underperform? 	should I be underperforming?
should you be underperforming?
should he be underperforming?
should we be underperforming?
should you be underperforming?
should they be underperforming? 	should I have underperformed?
should you have underperformed?
should he have underperformed?
should we have underperformed?
should you have underperformed?
should they have underperformed? 	should I have been underperforming?
should you have been underperforming?
should he have been underperforming?
should we have been underperforming?
should you have been underperforming?
should they have been underperforming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not underperform?
should you not underperform?
should he not underperform?
should we not underperform?
should you not underperform?
should they not underperform? 	should I not be underperforming?
should you not be underperforming?
should he not be underperforming?
should we not be underperforming?
should you not be underperforming?
should they not be underperforming? 	should I not have underperformed?
should you not have underperformed?
should he not have underperformed?
should we not have underperformed?
should you not have underperformed?
should they not have underperformed? 	should I not have been underperforming?
should you not have been underperforming?
should he not have been underperforming?
should we not have been underperforming?
should you not have been underperforming?
should they not have been underperforming?