may accumulate
Regular verb: accumulate - accumulated- accumulated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may accumulate
you may accumulate
he may accumulate
we may accumulate
you may accumulate
they may accumulate 	I may be accumulating
you may be accumulating
he may be accumulating
we may be accumulating
you may be accumulating
they may be accumulating	I may have accumulated
you may have accumulated
he may have accumulated
we may have accumulated
you may have accumulated
they may have accumulated	I may have been accumulating
you may have been accumulating
he may have been accumulating
we may have been accumulating
you may have been accumulating
they may have been accumulating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't accumulate
you mayn't accumulate
he mayn't accumulate
we mayn't accumulate
you mayn't accumulate
they mayn't accumulate 	I mayn't be accumulating
you mayn't be accumulating
he mayn't be accumulating
we mayn't be accumulating
you mayn't be accumulating
they mayn't be accumulating	I mayn't have accumulated
you mayn't have accumulated
he mayn't have accumulated
we mayn't have accumulated
you mayn't have accumulated
they mayn't have accumulated	I mayn't have been accumulating
you mayn't have been accumulating
he mayn't have been accumulating
we mayn't have been accumulating
you mayn't have been accumulating
they mayn't have been accumulating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I accumulate?
may you accumulate?
may he accumulate?
may we accumulate?
may you accumulate?
may they accumulate? 	may I be accumulating?
may you be accumulating?
may he be accumulating?
may we be accumulating?
may you be accumulating?
may they be accumulating? 	may I have accumulated?
may you have accumulated?
may he have accumulated?
may we have accumulated?
may you have accumulated?
may they have accumulated? 	may I have been accumulating?
may you have been accumulating?
may he have been accumulating?
may we have been accumulating?
may you have been accumulating?
may they have been accumulating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I accumulate?
mayn't you accumulate?
mayn't he accumulate?
mayn't we accumulate?
mayn't you accumulate?
mayn't they accumulate? 	mayn't I be accumulating?
mayn't you be accumulating?
mayn't he be accumulating?
mayn't we be accumulating?
mayn't you be accumulating?
mayn't they be accumulating? 	mayn't I have accumulated?
mayn't you have accumulated?
mayn't he have accumulated?
mayn't we have accumulated?
mayn't you have accumulated?
mayn't they have accumulated? 	mayn't I have been accumulating?
mayn't you have been accumulating?
mayn't he have been accumulating?
mayn't we have been accumulating?
mayn't you have been accumulating?
mayn't they have been accumulating?