English verb conjugation
MAY THUMB

Regular verb: thumb - thumbed - thumbed

Affirmation

Simple form	V-ing form
I may thumb you may thumb he may thumb we may thumb you may thumb they may thumb	I may be thumbing you may be thumbing he 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 he 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 he 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 mayn't thumb you mayn't thumb he mayn't thumb we mayn't thumb you mayn't thumb they mayn't thumb	I mayn't be thumbing you mayn't be thumbing he mayn't be thumbing we mayn't be thumbing you mayn't be thumbing they mayn't be thumbing
Perfect	V-ing perfect
I mayn't have thumbed you mayn't have thumbed he mayn't have thumbed we mayn't have thumbed you mayn't have thumbed they mayn't have thumbed	I mayn't have been thumbing you mayn't have been thumbing he mayn't have been thumbing we mayn't have been thumbing you mayn't have been thumbing they mayn't have been thumbing

Interrogative form

Simple form	V-ing form
may I thumb? may you thumb? may he thumb? may we thumb? may you thumb? may they thumb?	may I be thumbing? may you be thumbing? may he 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 he 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 he 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
mayn't I thumb? mayn't you thumb? mayn't he thumb? mayn't we thumb? mayn't you thumb? mayn't they thumb?	mayn't I be thumbing? mayn't you be thumbing? mayn't he be thumbing? mayn't we be thumbing? mayn't you be thumbing? mayn't they be thumbing?
Perfect	V-ing perfect
mayn't I have thumbed? mayn't you have thumbed? mayn't he have thumbed? mayn't we have thumbed? mayn't you have thumbed? mayn't they have thumbed?	mayn't I have been thumbing? mayn't you have been thumbing? mayn't he have been thumbing? mayn't we have been thumbing? mayn't you have been thumbing? mayn't they have been thumbing?