may bump
Regular verb: bump - bumped- bumped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may bump
you may bump
he may bump
we may bump
you may bump
they may bump 	I may be bumping
you may be bumping
he may be bumping
we may be bumping
you may be bumping
they may be bumping	I may have bumped
you may have bumped
he 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
he 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
he 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
he 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
he 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
he 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 he bump?
may we bump?
may you bump?
may they bump? 	may I be bumping?
may you be bumping?
may he be bumping?
may we be bumping?
may you be bumping?
may they be bumping? 	may I have bumped?
may you have bumped?
may he 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 he 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 he 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 he 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 he 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 he have been bumping?
mayn't we have been bumping?
mayn't you have been bumping?
mayn't they have been bumping?