can 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 can decease decease
you can decease decease
he can decease decease
we can decease decease
you can decease decease
they can decease decease 	I can be decease deceasing
you can be decease deceasing
he can be decease deceasing
we can be decease deceasing
you can be decease deceasing
they can be decease deceasing	I can have decease deceased
you can have decease deceased
he can have decease deceased
we can have decease deceased
you can have decease deceased
they can have decease deceased	I can have been decease deceasing
you can have been decease deceasing
he can have been decease deceasing
we can have been decease deceasing
you can have been decease deceasing
they can have been decease deceasing	

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

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

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