may upchuck
Regular verb: upchuck - upchucked- upchucked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may upchuck
you may upchuck
he may upchuck
we may upchuck
you may upchuck
they may upchuck 	I may be upchucking
you may be upchucking
he may be upchucking
we may be upchucking
you may be upchucking
they may be upchucking	I may have upchucked
you may have upchucked
he may have upchucked
we may have upchucked
you may have upchucked
they may have upchucked	I may have been upchucking
you may have been upchucking
he may have been upchucking
we may have been upchucking
you may have been upchucking
they may have been upchucking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't upchuck
you mayn't upchuck
he mayn't upchuck
we mayn't upchuck
you mayn't upchuck
they mayn't upchuck 	I mayn't be upchucking
you mayn't be upchucking
he mayn't be upchucking
we mayn't be upchucking
you mayn't be upchucking
they mayn't be upchucking	I mayn't have upchucked
you mayn't have upchucked
he mayn't have upchucked
we mayn't have upchucked
you mayn't have upchucked
they mayn't have upchucked	I mayn't have been upchucking
you mayn't have been upchucking
he mayn't have been upchucking
we mayn't have been upchucking
you mayn't have been upchucking
they mayn't have been upchucking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I upchuck?
may you upchuck?
may he upchuck?
may we upchuck?
may you upchuck?
may they upchuck? 	may I be upchucking?
may you be upchucking?
may he be upchucking?
may we be upchucking?
may you be upchucking?
may they be upchucking? 	may I have upchucked?
may you have upchucked?
may he have upchucked?
may we have upchucked?
may you have upchucked?
may they have upchucked? 	may I have been upchucking?
may you have been upchucking?
may he have been upchucking?
may we have been upchucking?
may you have been upchucking?
may they have been upchucking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I upchuck?
mayn't you upchuck?
mayn't he upchuck?
mayn't we upchuck?
mayn't you upchuck?
mayn't they upchuck? 	mayn't I be upchucking?
mayn't you be upchucking?
mayn't he be upchucking?
mayn't we be upchucking?
mayn't you be upchucking?
mayn't they be upchucking? 	mayn't I have upchucked?
mayn't you have upchucked?
mayn't he have upchucked?
mayn't we have upchucked?
mayn't you have upchucked?
mayn't they have upchucked? 	mayn't I have been upchucking?
mayn't you have been upchucking?
mayn't he have been upchucking?
mayn't we have been upchucking?
mayn't you have been upchucking?
mayn't they have been upchucking?