English verb conjugation
MUST DAMP

Regular verb: damp - damped - damped

Affirmation

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