may undersell
Irregular verb: undersell - undersold- undersold

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may undersell
you may undersell
he may undersell
we may undersell
you may undersell
they may undersell 	I may be underselling
you may be underselling
he may be underselling
we may be underselling
you may be underselling
they may be underselling	I may have undersold
you may have undersold
he 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
he 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
he 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
he 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
he 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
he 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 he undersell?
may we undersell?
may you undersell?
may they undersell? 	may I be underselling?
may you be underselling?
may he be underselling?
may we be underselling?
may you be underselling?
may they be underselling? 	may I have undersold?
may you have undersold?
may he 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 he 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 he 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 he 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 he 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 he have been underselling?
mayn't we have been underselling?
mayn't you have been underselling?
mayn't they have been underselling?