English verb conjugation
MUST SCRUMP

Regular verb: scrump - scrumped - scrumped

Affirmation

Simple form	V-ing form
I must scrump you must scrump she must scrump we must scrump you must scrump they must scrump	I must be scrumping you must be scrumping she must be scrumping we must be scrumping you must be scrumping they must be scrumping
Perfect	V-ing perfect
I must have scrumped you must have scrumped she must have scrumped we must have scrumped you must have scrumped they must have scrumped	I must have been scrumping you must have been scrumping she must have been scrumping we must have been scrumping you must have been scrumping they must have been scrumping

Negation

Simple form	V-ing form
I mustn't scrump you mustn't scrump she mustn't scrump we mustn't scrump you mustn't scrump they mustn't scrump	I mustn't be scrumping you mustn't be scrumping she mustn't be scrumping we mustn't be scrumping you mustn't be scrumping they mustn't be scrumping
Perfect	V-ing perfect
I mustn't have scrumped you mustn't have scrumped she mustn't have scrumped we mustn't have scrumped you mustn't have scrumped they mustn't have scrumped	I mustn't have been scrumping you mustn't have been scrumping she mustn't have been scrumping we mustn't have been scrumping you mustn't have been scrumping they mustn't have been scrumping

Interrogative form

Simple form	V-ing form
must I scrump? must you scrump? must she scrump? must we scrump? must you scrump? must they scrump?	must I be scrumping? must you be scrumping? must she be scrumping? must we be scrumping? must you be scrumping? must they be scrumping?
Perfect	V-ing perfect
must I have scrumped? must you have scrumped? must she have scrumped? must we have scrumped? must you have scrumped? must they have scrumped?	must I have been scrumping? must you have been scrumping? must she have been scrumping? must we have been scrumping? must you have been scrumping? must they have been scrumping?

Interro-negative form

Simple form	V-ing form
mustn't I scrump? mustn't you scrump? mustn't she scrump? mustn't we scrump? mustn't you scrump? mustn't they scrump?	mustn't I be scrumping? mustn't you be scrumping? mustn't she be scrumping? mustn't we be scrumping? mustn't you be scrumping? mustn't they be scrumping?
Perfect	V-ing perfect
mustn't I have scrumped? mustn't you have scrumped? mustn't she have scrumped? mustn't we have scrumped? mustn't you have scrumped? mustn't they have scrumped?	mustn't I have been scrumping? mustn't you have been scrumping? mustn't she have been scrumping? mustn't we have been scrumping? mustn't you have been scrumping? mustn't they have been scrumping?