will underperform
Regular verb: underperform - underperformed- underperformed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll underperform
you'll underperform
she'll underperform
we'll underperform
you'll underperform
they'll underperform 	I'll be underperforming
you'll be underperforming
she'll be underperforming
we'll be underperforming
you'll be underperforming
they'll be underperforming	I'll have underperformed
you'll have underperformed
she'll have underperformed
we'll have underperformed
you'll have underperformed
they'll have underperformed	I'll have been underperforming
you'll have been underperforming
she'll have been underperforming
we'll have been underperforming
you'll have been underperforming
they'll have been underperforming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I won't underperform
you won't underperform
she won't underperform
we won't underperform
you won't underperform
they won't underperform 	I won't be underperforming
you won't be underperforming
she won't be underperforming
we won't be underperforming
you won't be underperforming
they won't be underperforming	I won't have underperformed
you won't have underperformed
she won't have underperformed
we won't have underperformed
you won't have underperformed
they won't have underperformed	I won't have been underperforming
you won't have been underperforming
she won't have been underperforming
we won't have been underperforming
you won't have been underperforming
they won't have been underperforming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
will I underperform?
will you underperform?
will she underperform?
will we underperform?
will you underperform?
will they underperform? 	will I be underperforming?
will you be underperforming?
will she be underperforming?
will we be underperforming?
will you be underperforming?
will they be underperforming? 	will I have underperformed?
will you have underperformed?
will she have underperformed?
will we have underperformed?
will you have underperformed?
will they have underperformed? 	will I have been underperforming?
will you have been underperforming?
will she have been underperforming?
will we have been underperforming?
will you have been underperforming?
will they have been underperforming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
won't I underperform?
won't you underperform?
won't she underperform?
won't we underperform?
won't you underperform?
won't they underperform? 	won't I be underperforming?
won't you be underperforming?
won't she be underperforming?
won't we be underperforming?
won't you be underperforming?
won't they be underperforming? 	won't I have underperformed?
won't you have underperformed?
won't she have underperformed?
won't we have underperformed?
won't you have underperformed?
won't they have underperformed? 	won't I have been underperforming?
won't you have been underperforming?
won't she have been underperforming?
won't we have been underperforming?
won't you have been underperforming?
won't they have been underperforming?