must damp
Regular verb: damp - damped- damped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must damp
you must damp
she must damp
we must damp
you must damp
they must damp 	I must be damping
you must be damping
she must be damping
we must be damping
you must be damping
they must be damping	I must have damped
you must have damped
she must have damped
we must have damped
you must have damped
they must have damped	I must have been damping
you must have been damping
she must have been damping
we must have been damping
you must have been damping
they must have been damping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't damp
you mustn't damp
she mustn't damp
we mustn't damp
you mustn't damp
they mustn't damp 	I mustn't be damping
you mustn't be damping
she mustn't be damping
we mustn't be damping
you mustn't be damping
they mustn't be damping	I mustn't have damped
you mustn't have damped
she mustn't have damped
we mustn't have damped
you mustn't have damped
they mustn't have damped	I mustn't have been damping
you mustn't have been damping
she mustn't have been damping
we mustn't have been damping
you mustn't have been damping
they mustn't have been damping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I damp?
must you damp?
must she damp?
must we damp?
must you damp?
must they damp? 	must I be damping?
must you be damping?
must she be damping?
must we be damping?
must you be damping?
must they be damping? 	must I have damped?
must you have damped?
must she have damped?
must we have damped?
must you have damped?
must they have damped? 	must I have been damping?
must you have been damping?
must she have been damping?
must we have been damping?
must you have been damping?
must they have been damping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I damp?
mustn't you damp?
mustn't she damp?
mustn't we damp?
mustn't you damp?
mustn't they damp? 	mustn't I be damping?
mustn't you be damping?
mustn't she be damping?
mustn't we be damping?
mustn't you be damping?
mustn't they be damping? 	mustn't I have damped?
mustn't you have damped?
mustn't she have damped?
mustn't we have damped?
mustn't you have damped?
mustn't they have damped? 	mustn't I have been damping?
mustn't you have been damping?
mustn't she have been damping?
mustn't we have been damping?
mustn't you have been damping?
mustn't they have been damping?