may underprop
Verbe régulier : underprop - underproped- underproped

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may underprop
you may underprop
he may underprop
we may underprop
you may underprop
they may underprop 	I may be underproping
you may be underproping
he may be underproping
we may be underproping
you may be underproping
they may be underproping	I may have underproped
you may have underproped
he may have underproped
we may have underproped
you may have underproped
they may have underproped	I may have been underproping
you may have been underproping
he may have been underproping
we may have been underproping
you may have been underproping
they may have been underproping	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mayn't underprop
you mayn't underprop
he mayn't underprop
we mayn't underprop
you mayn't underprop
they mayn't underprop 	I mayn't be underproping
you mayn't be underproping
he mayn't be underproping
we mayn't be underproping
you mayn't be underproping
they mayn't be underproping	I mayn't have underproped
you mayn't have underproped
he mayn't have underproped
we mayn't have underproped
you mayn't have underproped
they mayn't have underproped	I mayn't have been underproping
you mayn't have been underproping
he mayn't have been underproping
we mayn't have been underproping
you mayn't have been underproping
they mayn't have been underproping	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I underprop?
may you underprop?
may he underprop?
may we underprop?
may you underprop?
may they underprop? 	may I be underproping?
may you be underproping?
may he be underproping?
may we be underproping?
may you be underproping?
may they be underproping? 	may I have underproped?
may you have underproped?
may he have underproped?
may we have underproped?
may you have underproped?
may they have underproped? 	may I have been underproping?
may you have been underproping?
may he have been underproping?
may we have been underproping?
may you have been underproping?
may they have been underproping? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mayn't I underprop?
mayn't you underprop?
mayn't he underprop?
mayn't we underprop?
mayn't you underprop?
mayn't they underprop? 	mayn't I be underproping?
mayn't you be underproping?
mayn't he be underproping?
mayn't we be underproping?
mayn't you be underproping?
mayn't they be underproping? 	mayn't I have underproped?
mayn't you have underproped?
mayn't he have underproped?
mayn't we have underproped?
mayn't you have underproped?
mayn't they have underproped? 	mayn't I have been underproping?
mayn't you have been underproping?
mayn't he have been underproping?
mayn't we have been underproping?
mayn't you have been underproping?
mayn't they have been underproping?