English verb conjugation
MAY THUMB

Regular verb: thumb - thumbed - thumbed

Affirmation

Simple form	V-ing form
I may thumb you may thumb she may thumb we may thumb you may thumb they may thumb	I may be thumbing you may be thumbing she may be thumbing we may be thumbing you may be thumbing they may be thumbing
Perfect	V-ing perfect
I may have thumbed you may have thumbed she may have thumbed we may have thumbed you may have thumbed they may have thumbed	I may have been thumbing you may have been thumbing she may have been thumbing we may have been thumbing you may have been thumbing they may have been thumbing

Negation

Simple form	V-ing form
I may not thumb you may not thumb she may not thumb we may not thumb you may not thumb they may not thumb	I may not be thumbing you may not be thumbing she may not be thumbing we may not be thumbing you may not be thumbing they may not be thumbing
Perfect	V-ing perfect
I may not have thumbed you may not have thumbed she may not have thumbed we may not have thumbed you may not have thumbed they may not have thumbed	I may not have been thumbing you may not have been thumbing she may not have been thumbing we may not have been thumbing you may not have been thumbing they may not have been thumbing

Interrogative form

Simple form	V-ing form
may I thumb? may you thumb? may she thumb? may we thumb? may you thumb? may they thumb?	may I be thumbing? may you be thumbing? may she be thumbing? may we be thumbing? may you be thumbing? may they be thumbing?
Perfect	V-ing perfect
may I have thumbed? may you have thumbed? may she have thumbed? may we have thumbed? may you have thumbed? may they have thumbed?	may I have been thumbing? may you have been thumbing? may she have been thumbing? may we have been thumbing? may you have been thumbing? may they have been thumbing?

Interro-negative form

Simple form	V-ing form
may I not thumb? may you not thumb? may she not thumb? may we not thumb? may you not thumb? may they not thumb?	may I not be thumbing? may you not be thumbing? may she not be thumbing? may we not be thumbing? may you not be thumbing? may they not be thumbing?
Perfect	V-ing perfect
may I not have thumbed? may you not have thumbed? may she not have thumbed? may we not have thumbed? may you not have thumbed? may they not have thumbed?	may I not have been thumbing? may you not have been thumbing? may she not have been thumbing? may we not have been thumbing? may you not have been thumbing? may they not have been thumbing?