may bump
Regular verb: bump - bumped- bumped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may bump
you may bump
she may bump
we may bump
you may bump
they may bump 	I may be bumping
you may be bumping
she may be bumping
we may be bumping
you may be bumping
they may be bumping	I may have bumped
you may have bumped
she may have bumped
we may have bumped
you may have bumped
they may have bumped	I may have been bumping
you may have been bumping
she may have been bumping
we may have been bumping
you may have been bumping
they may have been bumping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't bump
you mayn't bump
she mayn't bump
we mayn't bump
you mayn't bump
they mayn't bump 	I mayn't be bumping
you mayn't be bumping
she mayn't be bumping
we mayn't be bumping
you mayn't be bumping
they mayn't be bumping	I mayn't have bumped
you mayn't have bumped
she mayn't have bumped
we mayn't have bumped
you mayn't have bumped
they mayn't have bumped	I mayn't have been bumping
you mayn't have been bumping
she mayn't have been bumping
we mayn't have been bumping
you mayn't have been bumping
they mayn't have been bumping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I bump?
may you bump?
may she bump?
may we bump?
may you bump?
may they bump? 	may I be bumping?
may you be bumping?
may she be bumping?
may we be bumping?
may you be bumping?
may they be bumping? 	may I have bumped?
may you have bumped?
may she have bumped?
may we have bumped?
may you have bumped?
may they have bumped? 	may I have been bumping?
may you have been bumping?
may she have been bumping?
may we have been bumping?
may you have been bumping?
may they have been bumping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I bump?
mayn't you bump?
mayn't she bump?
mayn't we bump?
mayn't you bump?
mayn't they bump? 	mayn't I be bumping?
mayn't you be bumping?
mayn't she be bumping?
mayn't we be bumping?
mayn't you be bumping?
mayn't they be bumping? 	mayn't I have bumped?
mayn't you have bumped?
mayn't she have bumped?
mayn't we have bumped?
mayn't you have bumped?
mayn't they have bumped? 	mayn't I have been bumping?
mayn't you have been bumping?
mayn't she have been bumping?
mayn't we have been bumping?
mayn't you have been bumping?
mayn't they have been bumping?