may underrun
Verbe irrégulier : underrun - underran- underrun

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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	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	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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? 	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?