may undergird
Verbe irrégulier : undergird - undergirt, undergirded- undergirt, undergirded

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may undergird
you may undergird
she may undergird
we may undergird
you may undergird
they may undergird 	I may be undergirding
you may be undergirding
she may be undergirding
we may be undergirding
you may be undergirding
they may be undergirding	I may have undergirt, undergirded
you may have undergirt, undergirded
she may have undergirt, undergirded
we may have undergirt, undergirded
you may have undergirt, undergirded
they may have undergirt, undergirded	I may have been undergirding
you may have been undergirding
she may have been undergirding
we may have been undergirding
you may have been undergirding
they may have been undergirding	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mayn't undergird
you mayn't undergird
she mayn't undergird
we mayn't undergird
you mayn't undergird
they mayn't undergird 	I mayn't be undergirding
you mayn't be undergirding
she mayn't be undergirding
we mayn't be undergirding
you mayn't be undergirding
they mayn't be undergirding	I mayn't have undergirt, undergirded
you mayn't have undergirt, undergirded
she mayn't have undergirt, undergirded
we mayn't have undergirt, undergirded
you mayn't have undergirt, undergirded
they mayn't have undergirt, undergirded	I mayn't have been undergirding
you mayn't have been undergirding
she mayn't have been undergirding
we mayn't have been undergirding
you mayn't have been undergirding
they mayn't have been undergirding	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I undergird?
may you undergird?
may she undergird?
may we undergird?
may you undergird?
may they undergird? 	may I be undergirding?
may you be undergirding?
may she be undergirding?
may we be undergirding?
may you be undergirding?
may they be undergirding? 	may I have undergirt, undergirded?
may you have undergirt, undergirded?
may she have undergirt, undergirded?
may we have undergirt, undergirded?
may you have undergirt, undergirded?
may they have undergirt, undergirded? 	may I have been undergirding?
may you have been undergirding?
may she have been undergirding?
may we have been undergirding?
may you have been undergirding?
may they have been undergirding? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mayn't I undergird?
mayn't you undergird?
mayn't she undergird?
mayn't we undergird?
mayn't you undergird?
mayn't they undergird? 	mayn't I be undergirding?
mayn't you be undergirding?
mayn't she be undergirding?
mayn't we be undergirding?
mayn't you be undergirding?
mayn't they be undergirding? 	mayn't I have undergirt, undergirded?
mayn't you have undergirt, undergirded?
mayn't she have undergirt, undergirded?
mayn't we have undergirt, undergirded?
mayn't you have undergirt, undergirded?
mayn't they have undergirt, undergirded? 	mayn't I have been undergirding?
mayn't you have been undergirding?
mayn't she have been undergirding?
mayn't we have been undergirding?
mayn't you have been undergirding?
mayn't they have been undergirding?