must bump
Regular verb: bump - bumped- bumped

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

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

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

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