English verb conjugation
MUST UPSTAGE

Regular verb: upstage - upstaged - upstaged

Affirmation

Simple form	V-ing form
I must upstage you must upstage he must upstage we must upstage you must upstage they must upstage	I must be upstaging you must be upstaging he must be upstaging we must be upstaging you must be upstaging they must be upstaging
Perfect	V-ing perfect
I must have upstaged you must have upstaged he must have upstaged we must have upstaged you must have upstaged they must have upstaged	I must have been upstaging you must have been upstaging he must have been upstaging we must have been upstaging you must have been upstaging they must have been upstaging

Negation

Simple form	V-ing form
I mustn't upstage you mustn't upstage he mustn't upstage we mustn't upstage you mustn't upstage they mustn't upstage	I mustn't be upstaging you mustn't be upstaging he mustn't be upstaging we mustn't be upstaging you mustn't be upstaging they mustn't be upstaging
Perfect	V-ing perfect
I mustn't have upstaged you mustn't have upstaged he mustn't have upstaged we mustn't have upstaged you mustn't have upstaged they mustn't have upstaged	I mustn't have been upstaging you mustn't have been upstaging he mustn't have been upstaging we mustn't have been upstaging you mustn't have been upstaging they mustn't have been upstaging

Interrogative form

Simple form	V-ing form
must I upstage? must you upstage? must he upstage? must we upstage? must you upstage? must they upstage?	must I be upstaging? must you be upstaging? must he be upstaging? must we be upstaging? must you be upstaging? must they be upstaging?
Perfect	V-ing perfect
must I have upstaged? must you have upstaged? must he have upstaged? must we have upstaged? must you have upstaged? must they have upstaged?	must I have been upstaging? must you have been upstaging? must he have been upstaging? must we have been upstaging? must you have been upstaging? must they have been upstaging?

Interro-negative form

Simple form	V-ing form
mustn't I upstage? mustn't you upstage? mustn't he upstage? mustn't we upstage? mustn't you upstage? mustn't they upstage?	mustn't I be upstaging? mustn't you be upstaging? mustn't he be upstaging? mustn't we be upstaging? mustn't you be upstaging? mustn't they be upstaging?
Perfect	V-ing perfect
mustn't I have upstaged? mustn't you have upstaged? mustn't he have upstaged? mustn't we have upstaged? mustn't you have upstaged? mustn't they have upstaged?	mustn't I have been upstaging? mustn't you have been upstaging? mustn't he have been upstaging? mustn't we have been upstaging? mustn't you have been upstaging? mustn't they have been upstaging?