may undersell
Irregular verb: undersell - undersold- undersold

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may undersell
you may undersell
she may undersell
we may undersell
you may undersell
they may undersell 	I may be underselling
you may be underselling
she may be underselling
we may be underselling
you may be underselling
they may be underselling	I may have undersold
you may have undersold
she may have undersold
we may have undersold
you may have undersold
they may have undersold	I may have been underselling
you may have been underselling
she may have been underselling
we may have been underselling
you may have been underselling
they may have been underselling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't undersell
you mayn't undersell
she mayn't undersell
we mayn't undersell
you mayn't undersell
they mayn't undersell 	I mayn't be underselling
you mayn't be underselling
she mayn't be underselling
we mayn't be underselling
you mayn't be underselling
they mayn't be underselling	I mayn't have undersold
you mayn't have undersold
she mayn't have undersold
we mayn't have undersold
you mayn't have undersold
they mayn't have undersold	I mayn't have been underselling
you mayn't have been underselling
she mayn't have been underselling
we mayn't have been underselling
you mayn't have been underselling
they mayn't have been underselling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I undersell?
may you undersell?
may she undersell?
may we undersell?
may you undersell?
may they undersell? 	may I be underselling?
may you be underselling?
may she be underselling?
may we be underselling?
may you be underselling?
may they be underselling? 	may I have undersold?
may you have undersold?
may she have undersold?
may we have undersold?
may you have undersold?
may they have undersold? 	may I have been underselling?
may you have been underselling?
may she have been underselling?
may we have been underselling?
may you have been underselling?
may they have been underselling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I undersell?
mayn't you undersell?
mayn't she undersell?
mayn't we undersell?
mayn't you undersell?
mayn't they undersell? 	mayn't I be underselling?
mayn't you be underselling?
mayn't she be underselling?
mayn't we be underselling?
mayn't you be underselling?
mayn't they be underselling? 	mayn't I have undersold?
mayn't you have undersold?
mayn't she have undersold?
mayn't we have undersold?
mayn't you have undersold?
mayn't they have undersold? 	mayn't I have been underselling?
mayn't you have been underselling?
mayn't she have been underselling?
mayn't we have been underselling?
mayn't you have been underselling?
mayn't they have been underselling?