English verb conjugation
MAY UNDERRUN

Irregular verb: underrun - underran - underrun

Affirmation

Simple form	V-ing form
I may underrun you may underrun she may underrun we may underrun you may underrun they may underrun	I may be underruning you may be underruning she may be underruning we may be underruning you may be underruning they may be underruning
Perfect	V-ing perfect
I may have underrun you may have underrun she may have underrun we may have underrun you may have underrun they may have underrun	I may have been underruning you may have been underruning she may have been underruning we may have been underruning you may have been underruning they may have been underruning

Negation

Simple form	V-ing form
I mayn't underrun you mayn't underrun she mayn't underrun we mayn't underrun you mayn't underrun they mayn't underrun	I mayn't be underruning you mayn't be underruning she mayn't be underruning we mayn't be underruning you mayn't be underruning they mayn't be underruning
Perfect	V-ing perfect
I mayn't have underrun you mayn't have underrun she mayn't have underrun we mayn't have underrun you mayn't have underrun they mayn't have underrun	I mayn't have been underruning you mayn't have been underruning she mayn't have been underruning we mayn't have been underruning you mayn't have been underruning they mayn't have been underruning

Interrogative form

Simple form	V-ing form
may I underrun? may you underrun? may she underrun? may we underrun? may you underrun? may they underrun?	may I be underruning? may you be underruning? may she be underruning? may we be underruning? may you be underruning? may they be underruning?
Perfect	V-ing perfect
may I have underrun? may you have underrun? may she have underrun? may we have underrun? may you have underrun? may they have underrun?	may I have been underruning? may you have been underruning? may she have been underruning? may we have been underruning? may you have been underruning? may they have been underruning?

Interro-negative form

Simple form	V-ing form
mayn't I underrun? mayn't you underrun? mayn't she underrun? mayn't we underrun? mayn't you underrun? mayn't they underrun?	mayn't I be underruning? mayn't you be underruning? mayn't she be underruning? mayn't we be underruning? mayn't you be underruning? mayn't they be underruning?
Perfect	V-ing perfect
mayn't I have underrun? mayn't you have underrun? mayn't she have underrun? mayn't we have underrun? mayn't you have underrun? mayn't they have underrun?	mayn't I have been underruning? mayn't you have been underruning? mayn't she have been underruning? mayn't we have been underruning? mayn't you have been underruning? mayn't they have been underruning?