English verb conjugation
MAY UNDERESTIMATE

Regular verb: underestimate - underestimated - underestimated

Affirmation

Simple form	V-ing form
I may underestimate you may underestimate he may underestimate we may underestimate you may underestimate they may underestimate	I may be underestimating you may be underestimating he may be underestimating we may be underestimating you may be underestimating they may be underestimating
Perfect	V-ing perfect
I may have underestimated you may have underestimated he may have underestimated we may have underestimated you may have underestimated they may have underestimated	I may have been underestimating you may have been underestimating he may have been underestimating we may have been underestimating you may have been underestimating they may have been underestimating

Negation

Simple form	V-ing form
I may not underestimate you may not underestimate he may not underestimate we may not underestimate you may not underestimate they may not underestimate	I may not be underestimating you may not be underestimating he may not be underestimating we may not be underestimating you may not be underestimating they may not be underestimating
Perfect	V-ing perfect
I may not have underestimated you may not have underestimated he may not have underestimated we may not have underestimated you may not have underestimated they may not have underestimated	I may not have been underestimating you may not have been underestimating he may not have been underestimating we may not have been underestimating you may not have been underestimating they may not have been underestimating

Interrogative form

Simple form	V-ing form
may I underestimate? may you underestimate? may he underestimate? may we underestimate? may you underestimate? may they underestimate?	may I be underestimating? may you be underestimating? may he be underestimating? may we be underestimating? may you be underestimating? may they be underestimating?
Perfect	V-ing perfect
may I have underestimated? may you have underestimated? may he have underestimated? may we have underestimated? may you have underestimated? may they have underestimated?	may I have been underestimating? may you have been underestimating? may he have been underestimating? may we have been underestimating? may you have been underestimating? may they have been underestimating?

Interro-negative form

Simple form	V-ing form
may I not underestimate? may you not underestimate? may he not underestimate? may we not underestimate? may you not underestimate? may they not underestimate?	may I not be underestimating? may you not be underestimating? may he not be underestimating? may we not be underestimating? may you not be underestimating? may they not be underestimating?
Perfect	V-ing perfect
may I not have underestimated? may you not have underestimated? may he not have underestimated? may we not have underestimated? may you not have underestimated? may they not have underestimated?	may I not have been underestimating? may you not have been underestimating? may he not have been underestimating? may we not have been underestimating? may you not have been underestimating? may they not have been underestimating?