English verb conjugation
MAY UNDERPERFORM

Regular verb: underperform - underperformed - underperformed

Affirmation

Simple form	V-ing form
I may underperform you may underperform he may underperform we may underperform you may underperform they may underperform	I may be underperforming you may be underperforming he may be underperforming we may be underperforming you may be underperforming they may be underperforming
Perfect	V-ing perfect
I may have underperformed you may have underperformed he may have underperformed we may have underperformed you may have underperformed they may have underperformed	I may have been underperforming you may have been underperforming he may have been underperforming we may have been underperforming you may have been underperforming they may have been underperforming

Negation

Simple form	V-ing form
I may not underperform you may not underperform he may not underperform we may not underperform you may not underperform they may not underperform	I may not be underperforming you may not be underperforming he may not be underperforming we may not be underperforming you may not be underperforming they may not be underperforming
Perfect	V-ing perfect
I may not have underperformed you may not have underperformed he may not have underperformed we may not have underperformed you may not have underperformed they may not have underperformed	I may not have been underperforming you may not have been underperforming he may not have been underperforming we may not have been underperforming you may not have been underperforming they may not have been underperforming

Interrogative form

Simple form	V-ing form
may I underperform? may you underperform? may he underperform? may we underperform? may you underperform? may they underperform?	may I be underperforming? may you be underperforming? may he be underperforming? may we be underperforming? may you be underperforming? may they be underperforming?
Perfect	V-ing perfect
may I have underperformed? may you have underperformed? may he have underperformed? may we have underperformed? may you have underperformed? may they have underperformed?	may I have been underperforming? may you have been underperforming? may he have been underperforming? may we have been underperforming? may you have been underperforming? may they have been underperforming?

Interro-negative form

Simple form	V-ing form
may I not underperform? may you not underperform? may he not underperform? may we not underperform? may you not underperform? may they not underperform?	may I not be underperforming? may you not be underperforming? may he not be underperforming? may we not be underperforming? may you not be underperforming? may they not be underperforming?
Perfect	V-ing perfect
may I not have underperformed? may you not have underperformed? may he not have underperformed? may we not have underperformed? may you not have underperformed? may they not have underperformed?	may I not have been underperforming? may you not have been underperforming? may he not have been underperforming? may we not have been underperforming? may you not have been underperforming? may they not have been underperforming?