Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I may dam up you may dam up he may dam up we may dam up you may dam up they may dam up
V-ing form
I may be dam uping you may be dam uping he may be dam uping we may be dam uping you may be dam uping they may be dam uping
Perfect
I may have dam uped you may have dam uped he may have dam uped we may have dam uped you may have dam uped they may have dam uped
V-ing perfect
I may have been dam uping you may have been dam uping he may have been dam uping we may have been dam uping you may have been dam uping they may have been dam uping
Negation
Simple form
I may not dam up you may not dam up he may not dam up we may not dam up you may not dam up they may not dam up
V-ing form
I may not be dam uping you may not be dam uping he may not be dam uping we may not be dam uping you may not be dam uping they may not be dam uping
Perfect
I may not have dam uped you may not have dam uped he may not have dam uped we may not have dam uped you may not have dam uped they may not have dam uped
V-ing perfect
I may not have been dam uping you may not have been dam uping he may not have been dam uping we may not have been dam uping you may not have been dam uping they may not have been dam uping
Interrogative form
Simple form
may I dam up? may you dam up? may he dam up? may we dam up? may you dam up? may they dam up?
V-ing form
may I be dam uping? may you be dam uping? may he be dam uping? may we be dam uping? may you be dam uping? may they be dam uping?
Perfect
may I have dam uped? may you have dam uped? may he have dam uped? may we have dam uped? may you have dam uped? may they have dam uped?
V-ing perfect
may I have been dam uping? may you have been dam uping? may he have been dam uping? may we have been dam uping? may you have been dam uping? may they have been dam uping?
Interro-negative form
Simple form
may I not dam up? may you not dam up? may he not dam up? may we not dam up? may you not dam up? may they not dam up?
V-ing form
may I not be dam uping? may you not be dam uping? may he not be dam uping? may we not be dam uping? may you not be dam uping? may they not be dam uping?
Perfect
may I not have dam uped? may you not have dam uped? may he not have dam uped? may we not have dam uped? may you not have dam uped? may they not have dam uped?
V-ing perfect
may I not have been dam uping? may you not have been dam uping? may he not have been dam uping? may we not have been dam uping? may you not have been dam uping? may they not have been dam uping?