may overstock
Regular verb: overstock - overstocked- overstocked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may overstock
you may overstock
he may overstock
we may overstock
you may overstock
they may overstock 	I may be overstocking
you may be overstocking
he may be overstocking
we may be overstocking
you may be overstocking
they may be overstocking	I may have overstocked
you may have overstocked
he may have overstocked
we may have overstocked
you may have overstocked
they may have overstocked	I may have been overstocking
you may have been overstocking
he may have been overstocking
we may have been overstocking
you may have been overstocking
they may have been overstocking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't overstock
you mayn't overstock
he mayn't overstock
we mayn't overstock
you mayn't overstock
they mayn't overstock 	I mayn't be overstocking
you mayn't be overstocking
he mayn't be overstocking
we mayn't be overstocking
you mayn't be overstocking
they mayn't be overstocking	I mayn't have overstocked
you mayn't have overstocked
he mayn't have overstocked
we mayn't have overstocked
you mayn't have overstocked
they mayn't have overstocked	I mayn't have been overstocking
you mayn't have been overstocking
he mayn't have been overstocking
we mayn't have been overstocking
you mayn't have been overstocking
they mayn't have been overstocking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I overstock?
may you overstock?
may he overstock?
may we overstock?
may you overstock?
may they overstock? 	may I be overstocking?
may you be overstocking?
may he be overstocking?
may we be overstocking?
may you be overstocking?
may they be overstocking? 	may I have overstocked?
may you have overstocked?
may he have overstocked?
may we have overstocked?
may you have overstocked?
may they have overstocked? 	may I have been overstocking?
may you have been overstocking?
may he have been overstocking?
may we have been overstocking?
may you have been overstocking?
may they have been overstocking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I overstock?
mayn't you overstock?
mayn't he overstock?
mayn't we overstock?
mayn't you overstock?
mayn't they overstock? 	mayn't I be overstocking?
mayn't you be overstocking?
mayn't he be overstocking?
mayn't we be overstocking?
mayn't you be overstocking?
mayn't they be overstocking? 	mayn't I have overstocked?
mayn't you have overstocked?
mayn't he have overstocked?
mayn't we have overstocked?
mayn't you have overstocked?
mayn't they have overstocked? 	mayn't I have been overstocking?
mayn't you have been overstocking?
mayn't he have been overstocking?
mayn't we have been overstocking?
mayn't you have been overstocking?
mayn't they have been overstocking?