may upheave
Regular verb: upheave - upheaved- upheaved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may upheave
you may upheave
she may upheave
we may upheave
you may upheave
they may upheave 	I may be upheaving
you may be upheaving
she may be upheaving
we may be upheaving
you may be upheaving
they may be upheaving	I may have upheaved
you may have upheaved
she may have upheaved
we may have upheaved
you may have upheaved
they may have upheaved	I may have been upheaving
you may have been upheaving
she may have been upheaving
we may have been upheaving
you may have been upheaving
they may have been upheaving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't upheave
you mayn't upheave
she mayn't upheave
we mayn't upheave
you mayn't upheave
they mayn't upheave 	I mayn't be upheaving
you mayn't be upheaving
she mayn't be upheaving
we mayn't be upheaving
you mayn't be upheaving
they mayn't be upheaving	I mayn't have upheaved
you mayn't have upheaved
she mayn't have upheaved
we mayn't have upheaved
you mayn't have upheaved
they mayn't have upheaved	I mayn't have been upheaving
you mayn't have been upheaving
she mayn't have been upheaving
we mayn't have been upheaving
you mayn't have been upheaving
they mayn't have been upheaving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I upheave?
may you upheave?
may she upheave?
may we upheave?
may you upheave?
may they upheave? 	may I be upheaving?
may you be upheaving?
may she be upheaving?
may we be upheaving?
may you be upheaving?
may they be upheaving? 	may I have upheaved?
may you have upheaved?
may she have upheaved?
may we have upheaved?
may you have upheaved?
may they have upheaved? 	may I have been upheaving?
may you have been upheaving?
may she have been upheaving?
may we have been upheaving?
may you have been upheaving?
may they have been upheaving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I upheave?
mayn't you upheave?
mayn't she upheave?
mayn't we upheave?
mayn't you upheave?
mayn't they upheave? 	mayn't I be upheaving?
mayn't you be upheaving?
mayn't she be upheaving?
mayn't we be upheaving?
mayn't you be upheaving?
mayn't they be upheaving? 	mayn't I have upheaved?
mayn't you have upheaved?
mayn't she have upheaved?
mayn't we have upheaved?
mayn't you have upheaved?
mayn't they have upheaved? 	mayn't I have been upheaving?
mayn't you have been upheaving?
mayn't she have been upheaving?
mayn't we have been upheaving?
mayn't you have been upheaving?
mayn't they have been upheaving?