may decease decease
Regular verb: decease decease - decease deceased- decease deceased

, this verb may not exist. Conjugation is given as example.

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may decease decease
you may decease decease
he may decease decease
we may decease decease
you may decease decease
they may decease decease 	I may be decease deceasing
you may be decease deceasing
he may be decease deceasing
we may be decease deceasing
you may be decease deceasing
they may be decease deceasing	I may have decease deceased
you may have decease deceased
he may have decease deceased
we may have decease deceased
you may have decease deceased
they may have decease deceased	I may have been decease deceasing
you may have been decease deceasing
he may have been decease deceasing
we may have been decease deceasing
you may have been decease deceasing
they may have been decease deceasing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't decease decease
you mayn't decease decease
he mayn't decease decease
we mayn't decease decease
you mayn't decease decease
they mayn't decease decease 	I mayn't be decease deceasing
you mayn't be decease deceasing
he mayn't be decease deceasing
we mayn't be decease deceasing
you mayn't be decease deceasing
they mayn't be decease deceasing	I mayn't have decease deceased
you mayn't have decease deceased
he mayn't have decease deceased
we mayn't have decease deceased
you mayn't have decease deceased
they mayn't have decease deceased	I mayn't have been decease deceasing
you mayn't have been decease deceasing
he mayn't have been decease deceasing
we mayn't have been decease deceasing
you mayn't have been decease deceasing
they mayn't have been decease deceasing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I decease decease?
may you decease decease?
may he decease decease?
may we decease decease?
may you decease decease?
may they decease decease? 	may I be decease deceasing?
may you be decease deceasing?
may he be decease deceasing?
may we be decease deceasing?
may you be decease deceasing?
may they be decease deceasing? 	may I have decease deceased?
may you have decease deceased?
may he have decease deceased?
may we have decease deceased?
may you have decease deceased?
may they have decease deceased? 	may I have been decease deceasing?
may you have been decease deceasing?
may he have been decease deceasing?
may we have been decease deceasing?
may you have been decease deceasing?
may they have been decease deceasing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I decease decease?
mayn't you decease decease?
mayn't he decease decease?
mayn't we decease decease?
mayn't you decease decease?
mayn't they decease decease? 	mayn't I be decease deceasing?
mayn't you be decease deceasing?
mayn't he be decease deceasing?
mayn't we be decease deceasing?
mayn't you be decease deceasing?
mayn't they be decease deceasing? 	mayn't I have decease deceased?
mayn't you have decease deceased?
mayn't he have decease deceased?
mayn't we have decease deceased?
mayn't you have decease deceased?
mayn't they have decease deceased? 	mayn't I have been decease deceasing?
mayn't you have been decease deceasing?
mayn't he have been decease deceasing?
mayn't we have been decease deceasing?
mayn't you have been decease deceasing?
mayn't they have been decease deceasing?