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 must not upstage you must not upstage he must not upstage we must not upstage you must not upstage they must not upstage	I must not be upstaging you must not be upstaging he must not be upstaging we must not be upstaging you must not be upstaging they must not be upstaging
Perfect	V-ing perfect
I must not have upstaged you must not have upstaged he must not have upstaged we must not have upstaged you must not have upstaged they must not have upstaged	I must not have been upstaging you must not have been upstaging he must not have been upstaging we must not have been upstaging you must not have been upstaging they must not 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
must I not upstage? must you not upstage? must he not upstage? must we not upstage? must you not upstage? must they not upstage?	must I not be upstaging? must you not be upstaging? must he not be upstaging? must we not be upstaging? must you not be upstaging? must they not be upstaging?
Perfect	V-ing perfect
must I not have upstaged? must you not have upstaged? must he not have upstaged? must we not have upstaged? must you not have upstaged? must they not have upstaged?	must I not have been upstaging? must you not have been upstaging? must he not have been upstaging? must we not have been upstaging? must you not have been upstaging? must they not have been upstaging?