may underrun
Irregular verb: underrun - underran- underrun

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
I may not underrun
you may not underrun
she may not underrun
we may not underrun
you may not underrun
they may not underrun 	I may not be underruning
you may not be underruning
she may not be underruning
we may not be underruning
you may not be underruning
they may not be underruning	I may not have underrun
you may not have underrun
she may not have underrun
we may not have underrun
you may not have underrun
they may not have underrun	I may not have been underruning
you may not have been underruning
she may not have been underruning
we may not have been underruning
you may not have been underruning
they may not have been underruning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
may I not underrun?
may you not underrun?
may she not underrun?
may we not underrun?
may you not underrun?
may they not underrun? 	may I not be underruning?
may you not be underruning?
may she not be underruning?
may we not be underruning?
may you not be underruning?
may they not be underruning? 	may I not have underrun?
may you not have underrun?
may she not have underrun?
may we not have underrun?
may you not have underrun?
may they not have underrun? 	may I not have been underruning?
may you not have been underruning?
may she not have been underruning?
may we not have been underruning?
may you not have been underruning?
may they not have been underruning?