may drum
Regular verb: drum - drummed- drummed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may drum
you may drum
she may drum
we may drum
you may drum
they may drum 	I may be drumming
you may be drumming
she may be drumming
we may be drumming
you may be drumming
they may be drumming	I may have drummed
you may have drummed
she may have drummed
we may have drummed
you may have drummed
they may have drummed	I may have been drumming
you may have been drumming
she may have been drumming
we may have been drumming
you may have been drumming
they may have been drumming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't drum
you mayn't drum
she mayn't drum
we mayn't drum
you mayn't drum
they mayn't drum 	I mayn't be drumming
you mayn't be drumming
she mayn't be drumming
we mayn't be drumming
you mayn't be drumming
they mayn't be drumming	I mayn't have drummed
you mayn't have drummed
she mayn't have drummed
we mayn't have drummed
you mayn't have drummed
they mayn't have drummed	I mayn't have been drumming
you mayn't have been drumming
she mayn't have been drumming
we mayn't have been drumming
you mayn't have been drumming
they mayn't have been drumming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I drum?
may you drum?
may she drum?
may we drum?
may you drum?
may they drum? 	may I be drumming?
may you be drumming?
may she be drumming?
may we be drumming?
may you be drumming?
may they be drumming? 	may I have drummed?
may you have drummed?
may she have drummed?
may we have drummed?
may you have drummed?
may they have drummed? 	may I have been drumming?
may you have been drumming?
may she have been drumming?
may we have been drumming?
may you have been drumming?
may they have been drumming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I drum?
mayn't you drum?
mayn't she drum?
mayn't we drum?
mayn't you drum?
mayn't they drum? 	mayn't I be drumming?
mayn't you be drumming?
mayn't she be drumming?
mayn't we be drumming?
mayn't you be drumming?
mayn't they be drumming? 	mayn't I have drummed?
mayn't you have drummed?
mayn't she have drummed?
mayn't we have drummed?
mayn't you have drummed?
mayn't they have drummed? 	mayn't I have been drumming?
mayn't you have been drumming?
mayn't she have been drumming?
mayn't we have been drumming?
mayn't you have been drumming?
mayn't they have been drumming?