may blackball
Regular verb: blackball - blackballed- blackballed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may blackball
you may blackball
she may blackball
we may blackball
you may blackball
they may blackball 	I may be blackballing
you may be blackballing
she may be blackballing
we may be blackballing
you may be blackballing
they may be blackballing	I may have blackballed
you may have blackballed
she may have blackballed
we may have blackballed
you may have blackballed
they may have blackballed	I may have been blackballing
you may have been blackballing
she may have been blackballing
we may have been blackballing
you may have been blackballing
they may have been blackballing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't blackball
you mayn't blackball
she mayn't blackball
we mayn't blackball
you mayn't blackball
they mayn't blackball 	I mayn't be blackballing
you mayn't be blackballing
she mayn't be blackballing
we mayn't be blackballing
you mayn't be blackballing
they mayn't be blackballing	I mayn't have blackballed
you mayn't have blackballed
she mayn't have blackballed
we mayn't have blackballed
you mayn't have blackballed
they mayn't have blackballed	I mayn't have been blackballing
you mayn't have been blackballing
she mayn't have been blackballing
we mayn't have been blackballing
you mayn't have been blackballing
they mayn't have been blackballing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I blackball?
may you blackball?
may she blackball?
may we blackball?
may you blackball?
may they blackball? 	may I be blackballing?
may you be blackballing?
may she be blackballing?
may we be blackballing?
may you be blackballing?
may they be blackballing? 	may I have blackballed?
may you have blackballed?
may she have blackballed?
may we have blackballed?
may you have blackballed?
may they have blackballed? 	may I have been blackballing?
may you have been blackballing?
may she have been blackballing?
may we have been blackballing?
may you have been blackballing?
may they have been blackballing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I blackball?
mayn't you blackball?
mayn't she blackball?
mayn't we blackball?
mayn't you blackball?
mayn't they blackball? 	mayn't I be blackballing?
mayn't you be blackballing?
mayn't she be blackballing?
mayn't we be blackballing?
mayn't you be blackballing?
mayn't they be blackballing? 	mayn't I have blackballed?
mayn't you have blackballed?
mayn't she have blackballed?
mayn't we have blackballed?
mayn't you have blackballed?
mayn't they have blackballed? 	mayn't I have been blackballing?
mayn't you have been blackballing?
mayn't she have been blackballing?
mayn't we have been blackballing?
mayn't you have been blackballing?
mayn't they have been blackballing?